Hi Graham, thanks for the reply. About 2mths ago i had to close my user account ( in my name ) and start operating the Administraters a/c just so i could access Adobe CS3 & Lightroom. Since i started using the Administrators a/c, i've had to do all sorts of trickery to get my PC to run properly. The mouse won't work on the old " Des user " a/c, and most of the desktop icon shortcuts have dissapeared. In short i think a bug has got into the system somehow, but scans reveal nothing. I've got AVG, Spybot & spyware doc.