Well,it worked! Thanks to you. I selected all of the entries to disable and the problem disappeared so I knew it was one of them. I enabled all of them again and the problem reappeared. Then I began disabling them in groups of 15-20 until I found the group that got rid of the problem. I then enabled that group one by one until I identified the problem entry. BTW, I did not have to reboot each time. My problem was with EncodeDivxContextMenuClass and I currently am leaving it as disabled. Do you think it would be wise just to uninstall Divx from my computer or just leave this as diabled?