I work for an architecture firm and this issue has popped up a few times and I cannot figure it out. At randoom when some of the users open a drawing with sketchup, the program freezes. Its not one particualr drawing, nor does it happen on any drawing file regularly. it happens to all of them at random. We are an all HP shop with ATI graphics cards in all of the PCs. the 2 PCs that this is hapening on most frequesntly both had Trial versions of the SketchUp Pro software which have since expired. i have tried uninstalling the trial versions and removing manually, through the registry, all instances of @last and SketchUp. still this keeps happening. i have tried updating the Video Card drivers, rolling them back as well. also i have tried uninstalling the free version and reinstalling. the only other step that i can think to take is to reimage the machines and hope it doesnt happen again, but because i am unsure of what the outcome will be, i would prefer not to do this. its a lot of work to configure these machines because there are alot of special instructions for each PC. i am at my wits end with this issue and i need to get it finished ASAP. has anyone else out there experienced this issue. These machines are fairly new (no more than 8 months old) and the Hardware Specs are more than enough to run this program and several others without problem. HELP ME PLEASE!!!