I used to run nod32 2.7 without realtime file scanning but did use IMON. Today I upgraded to v4 and then ran windows update for this month. I am running windows XP 32bit with SP3 It downloads the windows update files and then applies the patches. The http scanner scans the files as they downloaded without any noticeable problem. I then noticed the apply part going very slowly, so looked at the statistics part of nod32 and seen it scanning things like inf files at very slow speeds (about 2 or 3 inf files per second), task manager showed ekrn.exe maxed out cpu utilisation and the overall speed of the updates was severely compromised in my view. When I unticked real time protection box the rest of the updates flew by. Is this typical behaviour for real time protection and windows updates? PC spec if anyone is thinking it some crappy 486 or something is 4 gig ram (3 gig useable) core 2 duo 6420 and raptor hdd.