I have some of those problems daily, there are certain things I do that will occasionally cause Poser to hang (a batch injection of morphs is one, sometimes loading a figure). It loses track of files too occasionally, but finds them again after I shut down the program and re-start it. A couple of times, Poser has lost some of its basic components it needs to load, and I've had to re-install Poser. There is a patch to Poser 5 available from e-Frontier- actually 2 patches- that may fix some problems. I don't know because I keep forgetting to run the patch again after re-installing Poser (and now that I'm reminded, I'll do that now). Otherwise, it's just part of my expectation that Poser is going to hang sometimes. So I have learned to save work early and often. Poser is a memory hog. Windows has always been poor at managing memory (XP is so much better than 98 in that area, but it's still not great). And I often ask Poser to do things on my Little-Computer-That-Could that should really be done on a more powerful computer. Thus I've just learned to deal with the occasional hang as a fact of life. If you find better answers though, I'll watch the thread, because I would always like to optimize things more. (Yesterday someone posted advice for optimizing memory management in Windows, that was useful.)