I have a pc running win7 64bit, lately I've noticed a few strange behaviours;
Loading slowly My computer and the hard drives.
Sometimes slows down when I'm trying to download a file (I mean that when I press save on a file and the saving window opens its stuck for a few sec.
One of my everyday use excell files is suddenly don't open and stucks the program until I reboot (task manager couldn't close it).
I had a program on my desktop that suddenly changed its name to the same name as one of the folders on my desktop.
Today I suddenly saw the windows media player open when I didn;t open it.
I ran a full scan on the ESET NOD (last updated version) - no threat and a full scan on Trojan remover - also no threat found.
The PC was formatted around 4-6 month ago and acted all fine.
Thanks in advance