Sam Ronson -- 'Pissed Off' at LiLo Move-In

1/4/2011 10:58 AM PST
Sam Ronson is furious that her ex-GF Lindsay Lohan is moving in next door -- and yesterday, the DJ wanted to make it crystal clear, "Trust me, it wasn't planned."

As Ronson tried to get out of her Venice, CA pad yesterday -- photogs tried to ask about the situation ... but a frustrated Sam replied, "Dude, I'm way too pissed off right now."

Why's she so pissed? Well, for starters ... she could barely get out of her garage yesterday -- because she was blocked by Lohan's moving van.