Hmm. What system do you have? Mine is an Opteron, and I've yet to have a problem of any sort, with Poser 5 or anything else I can think of. And I've done no tweaks to XP whatsoever. Oh, wait a sec. I did eventually turn off the firewall, but not because I was having any noticable trouble with it. I was already using a firewall, and I liked it, so I've just stayed with that one. (I actually had both firewalls running at the same time for a while, and still didn't see much trouble -- though I did a little.) Anyway, make doubly sure you have ALL the Poser 5 service releases installed, and then, if you keep having trouble, regarding the 'known problem', I suggest you still not be too quick to take CL's word for things. Experiment a little. If you can get hold of a different but compatible video adapter, for example, you might try swapping them out. In my experience, an awful lot of Poser troubles seem related to what video adapter you're using. And there are other possibilities, too. You might have something conflicting in the memory. See if you can get hold of EndItAll or some similar program and straight up after a clean cold boot, try removing anything and everything you can from memory -- maintaining only what's necessary to keep the system stable -- and then try launching Poser and see what happens. If the problem goes away, then you can experiment to find out which application is causing the problem, or if you don't need that stuff running when your using Poser anyway, you can always just cold boot and clear out the memory like this every time you're ready for a Poser session. Well, that's my advice anyway. Hope something suggested here helps. And there's probably lots of other stuff you could try, too. / R