yeah dude, it sounds like the regulator is broken. My one broke the second day i got the car (from UAS). It was pretty funny when it happened - i heard a really loud bang and i thought someone chucked a rock at my car, so i pulled over and looked around with a real pissed off look on my face hoping to see some smart ass kunt running. Then when i turned around to check the car, i saw the window was crooked. lol.
In the end it cost me ~$340 to fix it. WHAT A RIP OFF!
anyways, the whole part needs to be replaced. so be prepared to spend from $150 - $350 in total incl "labour" (pfft).