strange mouse issues on startup

[Brattmfc]

started to encounter a strange problem after startup, the mouse buttons just goes CRAZY, e.g when i double click internet explorer, my computer, etc it will open them 20+ times, its definateley nothing to do with mouse settings, because once i press ctrl+alt+delete, and then cancel, to go back to windows, its fine :S

any ideas?

 

[Crispy]

Two thing that might be wrong with it: your mouse is stuffed or you have a Trojan in your computer.