Explorer.exe is the most unstable part of Windows XP! I hate it when you open up a folder which has half downloaded or corrupt video files, explorer.exe will crash causing the whole desktop to mess up. There should be some error checking code, or something that will cause explorer.exe to behave in a more better fashion. Granted the fact that the system tray recovers well in Windows XP compaired to earlier versions it is still really painful and distracting.