desktop icons messing up

[S]

when i click on the time in the right-hand corner, my desktop icons start
moving around and disappearing, as do my minimised windows - the font goes
funny as well. anyone know what this is? i did an antivirus test but no
viruses were found..

 

[Mark L. Ferguson]

Some Windows Vista functions may not work, or Windows Vista may stop
responding: http://support.microsoft.com/kb/929833