Recently, I have been experiencing cpu usage/lag spikes while browsing on Firefox. I dont think it has anything to do with Flash like the similar cases I've encountered. Ive observed task manager while browsing and I saw that firefox.exe would use from 05-15% cpu normally but would have sudden jumps to 40-60% arbitrarily and when I'm typing in a field like i'm doing now. during these spikes, letters would not appear on the screen as im typing, but a bunches of them would appear after a pause of about 1-2 seconds. these spikes happen about every 10 seconds or so. Also, whenever I move to a new page, i would get about 5 seconds of cpu lockup or lag (i can't click/type anything in the browser) before I could continue browsing normally. This isn't the case with IE. However, I have noticed that it takes a bit longer for my computer to boot than I remember. Im not quite sure though. Otherwise my computer has been running fine. Could this be a problem with my computer? If so, is it a problem with firefox thats fixable, or possibly a virus/malware problem i haven't been able to detect? What would be the best course of action to fix this problem? Thanks in advance everyone! I would really appreciate any suggestions.