Hi, I know this is vague but I do not know what other information I should provide. I am running Nod32 v2.7 on my Windows 98SE. I can basically perform other kinds of virus scan, however, the in-depth scan would cause Windows to pop up "This program has performed an illegal operations." This happens even in Safe Mode. I think it conflicts with some other programs. Can someone please help me shed some light on this? Thank you very much.