I seem to be having registry problems. After cleaning the registry (with more than one cleaner) there are listed entries that I cannot clean because I have insufficent permissions. If I manually give myself permission to delete these entries (and do so manually via regedit) than my system fails to log my in after a reboot; I am logged in for about a second and then instantly logged back out.
I have been having problems with my icons. I tried to apply a custom set (via StyleXP). Some icons to change, but the defailt folder icons does not. So I thought that it might be the registry that was preventing my icon application. Then I ran in to the above problem.