After using my computer for a while (desktop) Explorer starts acting up and sometimes will crash and restart itself. By acting up, what usually happens is that when I open up a Window in Explorer parts of the menu might be missing, or not all of the window is painted, and I cannot open any other windows or start another program. Usually this happens when I'm opening/closing lots of windows in Explorer, such as when I'm looking for something or moving files around. If I shut down some windows or even programs I am running Explorer starts to act normally again, until I open 3-4 more windows. When this happens I use TaskManager to shut down Explorer, than I restart it.
Obviously the system is running out of resources somewhere. I've kept TaskManager open and watch Explorer's memory usage as I go about my business and I can see that memory usage steadily increases and I open and close windows. Once it gets to 35MB or higher I start seeing this problem.
Interestingly, I had a similar problem on my two previous systems. In my NT system the folder icons would get screwed up, and I forget exactly what happened in my Win2k system but I think it was more like what I see in XP. I thought maybe those earlier cases could be due to my video card/drivers, but this time I have all new hardware.
I now suspect that some program has attached itself to Explorer. Norton SystemWorks is on the top of my suspects list because it seems to get itself into everything and because I ran earlier versions of it in my previous systems.