I have to join in. Also, the same problem. Happens before windows update, and still happening after the update. And it seems this is not the only problem. If I tried to do a manual scan, it's always stuck at scanning operating memory (someone already opened up another thread for this one). Hope there's a solution soon, and it's just a bug, not a virus. Windows 7 64 bit Ultimate Edition EN 220.127.116.11 / 5358 (20100811) Update: The latest update (5361) seems to have fixed it.