Aglfilqj???

More of a nuesence than a problem, but this little Aglfilqj thingy keeps stopping things like My Documents and the Control Panel opening up properly. I have to press Ctrl, Alt, Delete and 'End Task' it so that My Documents opens. Worst still is when I run Fs, and after about 30 to 40 minutes or so my frame rates hit the floor and i check the Close Programs box and Ccapp (Norton internet security i think) says [Not Responding] about 2 minutes later i check again and i get 'Explorer [Not Responding] and i have to restart.
This happens every time... But i only get Explorer not responding when i run Fs.

Any ideas or cures?
This happens every time... But i only get Explorer not responding when i run Fs.

Any ideas or cures?