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Simon Cowell has learned the hard way not to sleep with strangers, because when he woke up he realized he had been robbed of a computer that contained X Factor secrets.

TMZ has confirmed ... last October, Simon hooked up with a girl he met at Drai's nightclub in Hollywood. He took her home, but the next morning she was gone and so was his computer and his wallet loaded with cash.

Simon -- who has his Bev Hills mansion wired for security -- called the cops. The footage showed the woman, cops tracked her down and she handed over the computer and the wallet sans cash.

Although it's unclear exactly when Simon broke up with fiancee Mezhgan Hussainy, sources connected with Simon tell us it was BEFORE the theft.

Just two months after Kobe Bryant and his estranged wife Vanessa shared a Valentine's Day kiss (below) -- fueling hopes of a reconciliation -- the two hit up the L.A. Kings playoff game with their daughters ... as "really good friends."

Sources close to Kobe tell TMZ ... the divorce is still on ... but Kobe is adamant the two are "really good friends" who still love each other.

As TMZ first reported, Kobe has been "aggressively" trying to save his marriage.

We're told Vanessa was open to the idea of a reconciliation ... but as of now, the divorce is still expected to move forward with Vanessa set to walk away with all three of the Bryant's Newport mansions PLUS $75 million in cash.

The U.S. Navy has not forked over a single cent to one of the men whose apartment was obliterated in last week's F-18 crash ... so says the man himself ... who's now considering legal action.

TMZ spoke with Colby Smith -- who rushed out of his apartment and helped save one of the pilots from the wreckage following Friday's crash in Virginia.

Colby tells us, the Navy agreed to pay for a hotel room for him and his family after the disaster -- but this morning, the hotel kicked 'em out ... because the Navy hadn't paid.

Colby says his fam had to shell out $400 for the room ... and will be changing hotels tonight. So far, we're told the Navy still hasn't sent a check.

According to Colby, the Navy also agreed to cover all damages stemming from the accident -- but a government rep said it could take up to 2 years before that payment is processed.

Colby tells us a 2 year wait is unacceptable ... and has already met with a lawyer in the hopes of expediting the process.

As for daily expenses -- we're told the Navy is paying out $89 per person per day for lodging, $30 per day for food, and $200 TOTAL for clothing.

Calls to the Navy were not returned.

5:00 PM PT -- Sources close to Colby tell us, the Navy called his family today after learning about what happened to him at the hotel, and told him where he could pick up a check for $4,000.

Amanda Bynes was arrested for DUI in West Hollywood early this morning ... TMZ has learned.

Law enforcement sources tell us, Bynes was attempting to pass a cop car in her black BMW ... when she sideswiped the right rear panel of the vehicle. She was pulled over and cops determined she was not fit to be behind the wheel.

We're told the 26-year-old actress was busted at 3 AM ... she's still behind bars.

According to her booking sheet, Bynes is 5'7" and 125 lbs. Her bail has been set at $5,000.

Bynes has been frequenting the Hollywood party scene recently, hitting up several clubs over the last few weeks.

Just last month -- on St. Patrick's Day -- TMZ cameras saw Bynes leaving Greystone Manor, and thought she appeared to be extremely intoxicated. One of our cameramen even warned the valet not to let Amanda drive, but she got into the driver's seat anyway ... and took off (below).

A week before that, Amanda bolted from a cop while he was writing her a ticket. She was pulled over for talking on a cell phone, and while the cop was writing her up ... she drove away.

Amanda later swung by the police station and signed the ticket. So far, she hasn't faced additional charges stemming from that incident.

We just got Amanda's mug shot ... it's to DYE for!

Chevy Chase is getting support from several staff members at "Community" ... who tell TMZ there are a bunch of people at the show who feel the actor was UNFAIRLY attacked by show creator Dan Harmon.

As we previously reported, Chase recently left a scathing voice mail for Harmon after the producer led a "F**k Chevy" chant at the season wrap party.

Now, sources who work on the show tell us ... "What Dan Harmon did was f**ked up ... Chevy is a pleasure to work with."

We're told ... many people on set feel the "dispute" that took place between the two men during the taping of the season finale was blown out of proportion by Harmon ... because Chevy was "very respectful."

Here's how we're being told it all went down -- Chevy had an issue with one of the scenes and asked for a rewrite. We're told Chevy was very calm and polite ... but told producers he would "respectfully decline" to participate in the scene unless a change was made.

Producers shot down Chevy's request ... and he quietly left the set without incident.

Our sources tell us they felt the issue had been handled privately because Chevy showed up at the wrap party ... and everyone was shocked when Harmon grabbed the mic and unloaded on the actor.

One source tells us, "What Dan did was embarassing and left a sour taste in all of our mouths ... so low class."

The source adds, "The staff was not pissed at Chevy ... we're pissed at Dan. We all hope Chevy comes back next season."

Damon Lindelof is PRAYING TO JACOB that life imitates art ... 'cause the "Lost" co-creator just dropped one U.S. dollar to play the infamous "Lost Numbers" in the mega-millions lottery.

Lindelof just posted a photo of his ticket to Twitter ... featuring the numbers 4, 8, 15, 16, 23 and 42.

Of course, Hurley played the numbers on the show ... and won a jackpot worth $114 million ... but the numbers turned out to be cursed ... and led to fires, arrests, plane crashes and a meteorite plowed into his chicken restaurant.

Rapper Joe Budden -- the guy behind the 2003 hit "Pump It Up" -- was arrested just hours before a concert in NYC yesterday ... and according to Budden ... it was all over a $75 parking ticket.

A rep for Budden tells TMZ ... cops showed up at a pre-concert meet-and-greet and informed Joe about a warrant out for his arrest due to an unpaid traffic ticket.

Budden's rep says ... the original fine was only $75 ... but cops still decided to arrest Joe and took him back to the station where he was booked and processed.

Kristin Cavallari has some problems back on the home front ... because her family has officially lost their ocean-front mansion featured on "Laguna Beach" after falling behind on mortgage payments.

The house is INSANE -- 5 bedrooms, 5 baths, ridiculous infinity pool, dry sauna, wine cellar, yoga room and some of the sickest beach views you've ever seen in your life.

But TMZ has learned ... the bank recently foreclosed on the property because, according to official documents, KC's father Dennis failed to make payments on the $7,599,458.66 he owed on the place.

And now it's too late for the Cavallari's to get the place back ... because the house was sold at a public auction just last month for $6.1 mil.

Calls to Kristin's rep have not been returned.

A fire truck rushed to the home of Katherine Heigl moments ago -- but TMZ has learned ... it was a steamy false alarm.

A rep for L.A. City Fire tells TMZ, a call was placed at 1:36pm reporting a possible fire -- and firefighters scrambled to the scene.

But Katherine's rep tells TMZ, the alarm was triggered by some steam inside the house -- the source is unclear. No one was hurt.

Piers Morgan has banned Madonna from his show but the reason is a mystery.

Piers tweeted Tuesday night, "Welcome to Twitter. You're still banned from my show. Love Piers X."

After receiving that tweet, Madonna's manager, Guy Oseary, tweeted back, "Really?" and attached a letter from Piers' producer inviting Madonna to be a guest on his UK chat show.

Piers then tweeted back, "Madonna has only been banned from my CNN show, not my UK show, which sent that invite. But I'm now banning her from that too."

As for why the bad blood, sources close to Madonna tell TMZ ... Madonna has no idea why Piers is mad at her, adding, "She doesn't even know who he is."

Octomom is so desperate for money, she did what she swore she would never do -- pose nude for cash.

Nadya Suleman is days away from being homeless ... the house she owns that has been in and out of foreclosure for more than a year will be sold at an auction Thursday ... so Octo needs a new crib for her brood ... stat.

The dilemma -- getting first and last month's rent together, so Octo has gone naked. She posed for the European magazine, "Closer."

Sources tell TMZ ... Octo got $10,000 for the shoot, which is what she needs to rent a new place.

Octo is being very up front now about some misgivings about having 14 kids, saying, "I'm doing that (posing nude) because I need to feed my kids. I need to pay the bills. And I'm still very cognizant of the repercussions of my choices."

It's not the first time Octo has been offered cash for skin ... porn giant Vivid Entertainment offered Suleman a $1,000,000 contract back in 2009 ... which she rejected.

Justin Bieber has made an offer on a sprawling mansion in Calabasas, CA ... but we're told the 18-year-old is wheeling and dealing with the seller and unless the seller caves ... it may fall through.

We're told the estate is in a gated community, which is the attraction for Justin -- privacy. The downside -- Justin just turned 18 and it's kinda weird for someone his age to live 22 miles from the Hollywood scene.

Our sources say the seller was asking for around 7+ million but Justin's offer was approximately $1.5 million under that price.

The house where Michael Jackson died is up for sale ... again ... for a whopping $23.9 million.

The estate went on the market Monday and we've learned a "major celebrity" will look at it tomorrow.

We're told the realtor -- Mauricio Umansky, the CEO and co-founder of The Agency in Beverly Hills -- will ONLY show the property to serious buyers who have pre-qualified ... which means they have the dough to buy the property.

Forget "Real Housewives" ... Danielle Staub is now earning over $1,000 AN HOUR to chat on the phone with fans ... and here's a shocker, she doesn't even need to talk dirty.

The former reality villain has joined forces with a website called Dial-A-Star.com ... connecting fans with z-list celebs at a premium price ... Staub gets $18-per-minute.

And she isn't the only one cashing in ...

Tila Tequila -------- $20-per-minute
Dina Lohan ------- $18-per-minute
OctoMom ---------- $12-per-minute
Michael Lohan --- $10-per-minute

There's more ... including "Jersey Shore" cast-off Angelina Pivarnick, Charlie Sheen's tryst Capri Anderson, and Hugh Hefner's ex-fiancee Crystal Harris.

We're told the site's been blowing up since it launched last week ... with Staub taking the honors as the top earner ... raking in $6,000 in calls since the launch. Angelina and Michael Lohan are tied for second with over $3,000 each, followed by Octomom at $1,260.

First Rosie ... now TMZ has learned roughly 30 people got the chop at the Oprah Winfrey Network today ... including 2 high level execs.

Sources connected to OWN tell us ... people from at least 3 departments were let go ... including the creative services dept., integrated marketing and promo scheduling.

We're told one of the casualties was the head of the Creative Services Department. Another was the Senior Vice President of Production.

One source tells us the group included people with years of experience in the industry as well as newcomers.

The timing is interesting ... considering O just cancelled Rosie O'Donnell's show. OWN has been struggling with low ratings since its launch.

One source tells us, "It's like a ghost town over there."

We're told, "They did the firings respectfully ... brought everyone into an office individually and explained the situation face to face."

3:26 PM PST: We just got footage of Jason's naked meltdown on a public street ... pounding his fists in anger and screaming maniacally.

2:15 PM PST: Law enforcement sources tell us ... there are NO plans to charge Russell with a crime for yesterday's incident.

2:08 PM PST: Law enforcement sources tell us ... Russell is being hospitalized on a 5150 psychiatric hold so authorities can assess his mental state. The 5150 hold allows authorities to keep Russell for up to 3 days to determine if he represents a threat to either himself or others.

1:45 PM PST: The CEO of Invisible Children, Ben Keesey, tells TMZ ..."Jason Russell was unfortunately hospitalized yesterday suffering from exhaustion, dehydration, and malnutrition."

The statement continues, "He is now receiving medical care and is focused on getting better. The past two weeks have taken a severe emotional toll on all of us, Jason especially, and that toll manifested itself in an unfortunate incident yesterday."

"Jason’s passion and his work have done so much to help so many, and we are devastated to see him dealing with this personal health issue. We will always love and support Jason, and we ask that you give his entire family privacy during this difficult time.”

The mastermind behind the now-famous "Kony 2012" video was detained by police in San Diego yesterday for allegedly being drunk in public and masturbating.

Jason Russell was taken into custody by San Diego cops. In addition to allegedly masturbating, cops say he vandalized cars.

Cops told NBC7 in SD they received several calls around 11:30 AM ... reporting a man in "various stages of undress."

Sources tell us ... Russell was dancing around the Intersection of Ingraham and Riviera wearing "speedo-like underwear" ... and eventually removed the underwear and began to make sexual gestures.

We're told ... it appeared Russell was under the influence of some kind of substance.

Cops told NBC, "Officers detained [Russell] and transferred him to a local medical facility for further evaluation and treatment."

Russell is the father of two, and says he wants to have 9 more kids.

Russell is the co-founder of Invisible Children as well as the filmmaker of the ultra-viral video which has set records on the Internet -- with more than 80 million views (below).