Minnie Driver's Neighbor War Flares Up!! Cops Have to Break It Up

Minnie Driver's block turned into a battlefield when her neighbor's delivery truck parked in front of her Hollywood Hills driveway ... and cops had to keep the peace.

Law enforcement sources tell TMZ ... officers were called out Tuesday afternoon when Driver went ballistic on Daniel Perelmutter -- a guy she's had beef with before. We're told Perelmutter got a delivery, but the truck made the mistake of blocking off Minnie's driveway.

Minnie and Daniel were screaming at each other so loudly, someone called police. Officers calmed down the situation and told them this was, ironically, a civil matter to be settled in court.

We're told they're doing just that Wednesday morning. These two squared off last year in a land dispute that got so bad ... she got a restraining order against him.