Are people reporting lockups experiencing actual lockups or is the program just so busy that it won't permit its own screen updates. I mentioned this back during the SR2 beta. Essentially tasks like rendering, hair draping, cloth draping, etc. are locking out the housekeeping tasks like screen updates. And the program still is and always will be a memory pig. That means it's very easy to get into a condition where your machine is swapping heavily. At that point your 2.2ghz machine is not much better than my 450Mhz machine because the throughput is governed by the disk controllers. The trick is to relearn some of the tricks we all knew when running P3 and P4 an smaller machines. Build a scene in layers and paste the layers to the background. This is even easy to do with animations now that a movie can be used for background in P5. But don't be too hasty to call the program "locked up" when it's using 100% CPU resources and has 100Mb or more free RAM. It's probably just working (as mine is right now draping hair in the background). So far the hair collision problem looks fixed. At least the first two drapes I did came out fine, without the "hairdo from hell" syndrome. Now I'm working on the last part of her hair and we'll see how that goes as it's draped over the shoulders and there is another figure involved. Should be interesting.... Even if the program says "not responding" in the Task Manager, that's not necessarily a lockup. Best way to test is put the program's window up front and wait about an hour. If it starts to update, then the program is actually still processing in there!