There are many issues that crop up periodically. I've noted some of them, others I haven't. One reoccuring problem is with the volume control icon. It disappears frequently and I have to go through the uninstall/reinstall route at least once a week.
My keyboard and mouse periodically stop working. I turn off the computer, check connections (usually fine), unplug and replug then, and then do a reboot. After 3-6+ attempts, this usually works to get it working again.
I like to use Google Desktop, but I stopped using that because it seemed to add to the problem. I would go to do a search using the desktop taskbar icon and computer would freeze up, needing a cold reboot.
My computer freezes, sometimes when I'm on and/or off the internet. Recently, I put it in Standy mode, came back couple hours later & it was locked down, had to do a cold reboot I uninstalled/reinstalled XP SP3 for that issue. So far (2 days) it's working. I routinely (almost daily) run Advanced Windows Cleaner which is great at identifying malware, unwanted cookies, unneeded temp files, etc. I have a Hijack This Log for nearly every day in the past 2 weeks.
Nothing obvious is causing the problem. Nothing new installed. Same old, same old, My PC is a refurbished Dell, P4 1.80 GHz, 30 gig with 4 gig free, 256 RAM (yes I know I need more).
Can you help? Tonight I thought it was down for the count as it was nearly impossible to get the eyboard running.