Thanx - nice to hear it's not only on my machine. Also - had a weird problem when finishing a file in mIRC (a download), then mIRC was freezing up, and I had to reboot to make it go away. That happened even when disabling the shield that should scan these files.
When I say 'I had' this problem, it's because I temporarily switched to another antivirus program .... but I'll keep an eye on updates and so, 'cause I really like avast!.