Any good PC prankster will have seen this, but for those who haven't (Hide Fly exe > Load fly > Right click Fly > Check Startup > Right Click Fly > Exit fly > Wait for Victim to boot PC) Guru Fly Download: http://www.drive-software.com/flyondesktop.html
I typed in 999999 flies.... Oh dear.... Spoiler They just kept on loading!! One CPU thread hit 95% usage LOL
Not seen that one before, nice one cheers EDIT - Once installed you can steal the exe from the install dir and it becomes portable like the fly one
NOD32 didn't find anything wrong with it yesterday, and Malwarebytes is 2/3 of the way through a full scan and hasn't picked anything up yet either so I think we're good EDIT - Scan complete, nothing found