I have a PC Pentium 4 using Windows XP Media Centre Edition. Problem - I first noticed my wireless mouse operating very slow. After checking batteries I went to the Control Panel and increased the mouse speed which then seemed to be operating normally. I then found that my Icons on the desktop would not start their program. Deleting and resetting does not change anything. MY programs all work normally from the start - Programs - menu. I have run Avast ant-virus, Spybot , Windows Registry Cleaner and System Mechanic 7, none of which indicate any problem.