Whenever I open a folder the folder name does not appear in the title bar. I get various characters, sometimes the first letter of the folder name, question marks, etc. Nothing I do in tools>folder options>view seems to help. I tried a system restore back to 21.9.2008 (before the trouble started) and that seemed to work, but then I downloaded an update for my registry cleaner, and I got the problem again. I uninstalled the registry cleaner, ran System Restore again, but the problem persists. Nothing else seems to be wrong.