I have a client that has a Windows XP pro system that boots up normally and all the icons on the desktop open up without any delay. The problem is the Start Button. Right after you boot the system the start button does not appear to work, (the start menu does not pop up). If you leave the machine alone for about 30 minutes then the start button will respond normally. They have moved most of the icons they use on a regular basis to the desktop which makes a very messy desktop. What they've started doing is leaving the computer on all the time and never shutting it off.