I've been running Windows Vista for a couple months now with no major problems until recently. Sometime within the past couple weeks, my computer has been running very abnormally sluggish, even when i have no programs running. Simple tasks such as opening an explorer window or program now sometimes takes 15 seconds - 1 minute. I've noticed in task manager very high physical memory usage (see screenshots below). I've looked in the processes tab and have noticed nothing under the ordinary, and i've run an adaware, windows defender, and virus scans, and nothing seems to be popping up. The only programs that i have on startup are windows defender and my mobo's sound program. I've noticed that the physical memory usage spikes radically, going from 30-40%, all the way to 99% about every 30 seconds or so. I've tried running in safemode, and everything seems to be running absolutely fine. The problem usually happens a couple mninutes after i boot up and login into windows. The problem is very frustrating, and as i type this, firefox is constant going in and out of being Non responsive and back to being responsive. I have no idea what could be the problem, as i've had no major hardware or software additions/changes in the past couple weeks. Please suggest some things that may be the problem. I've attached some links to some screenshots so you guys can be of better help. Thanks in advanced.