(1) The system periodically runs slow, especially if it has been idle for a while. During this, the hard drive sounds like it's busy doing "other things", and cursor movement freezes and unfreezes every few seconds. Rebooting (or shutting down and restarting) clears this up, but it may recur later.
(2) Sometimes the system freezes, especially when being woken-up from screen saver/monitor power saver mode (it just doesn't wake up), and occasionally when closing a window, application, or browser. A cntrl-alt-del (or two) might work to reboot out of the freeze, but often a hard-reboot is necessary.
(3) In attempts to address the above problems, I ran scanreg.exe /fix from the command prompt, and it reported that it repaired the registry. Then I rebooted and tried to run System File Checker. When I clicked Start > Programs > Accessories > System Tools > System Information, I got the following MSinfo32 message:
"This program has performed an illegal operation and will be shut down. If the problem persists, contact the program vendor. Details>> MSINFO32 caused an exception 03H in module MSVCRT40.DLL at 0167: 7968ce81.........."
I am therefore not able to open the System Information window. I was, however, able to run the System File Checker via Start > Run > SFC. It seemed to run successfully, but it did not ask me for anything from the 98SE CD, so I wonder if it really did anything useful.
(4) Often, when opening a web page (including geekstogo.com), I get a message stating that there were "errors running scripts", and it asks whether I want to continue running scripts on that page.
Any help with these issues would be most appreciated. Thanks!