For some reason, about a week ago, whenever I start my pc, and log onto windows, and everything gets settled. The computer wont respond to any .exe programs I try to open. Either through the start menu, quick launch or desktop. It will start to load with the hourglass. then just stop. It will open explorer windows tho, such as my documents, my music, etc. (but not process manager) Whats weird is, after trying to open these different programs, and nothing happening... 10-15 minutes later, everything that I tried to open opens all at once. I dont understand it. I dont have anything on the startup list enabled. (msconfig). nothing suspicous in my physical startup folder. If I try ctrl alt delete as soon as it logs onto windows, I can naviagate the task manager for about 10 seconds. then it freezes. (then like I said 10-15 minutes later, it all starts workin again). Anyways, when I open up the process manager for the brief time that it lets me, nothing appears that looks suspicious. So, im totally stumped about this. I tried running my norton antivirus 03 on a full indepth scan. but to no results. Anybody have any idea why I am getting this 'freeze' on startup?

Im running a 2.2 p4, 768mb ddr crucial