My first recommendation would be to run Disk Cleanup under your accessories folder (Start Menu -> Programs -> Accessories)...
Second, if you have a bunch of little icons down in the lower right-hand corner of your screen next to the clock, right-click them and go to their preferences in each program and disable the options "Start when windows starts" or "automatically start/login when i start my computer" and the sort. Some, like Quicktime, simply say "Install system tray icon". Make sure you set these options to off, they eat memory. Also, be sure you don't have any pointless programs that you don't need under your Startup folder (Start Menu -> Programs -> Startup)
After this, I would recommend running Disk Defragmenter, which can be found in the same location as Disk Cleanup.
Lastly, judging by what you said in your post, especially about Norton suddenly choking like that, it sounds like you may have viruses and/or adware/spyware running on your comp. That'* an awful lot of processes running upon startup. I would highly recommend downloading a couple of programs to see about this. I have used both Ad-Aware and BitDefender. While they aren't guaranteed to find everything, they are a good start. You can download these freely at http://www.download.com
If you have any questions, just ask! Hope this helps!
Originally Posted by WillWren
If I fart dust, you fart cosmic radiation from the big bang.
134K miles... Rice pipe intake w/K&N racing filter, 180 t-stat, Rear Sensatracs, Perf Endlinks, tinted tails, custom gauges. Pioneer DE-1700 CD Player with 4"x6" 2-ways and 6x9" 3-ways
But no matter what, I can't seem to stop breaking engine mounts...
92 Bonneville SE - Blue Devil