Hi Everyone, I'm running Windows XP Professional, and have been recently getting this message: "Your system is low on virtual memory. Windows is increasing the size of your virtual memory paging file." The problem is, after running for about 4 and a half hours (on average), my computer needs to be restarted. When attempting to run any application, I receive other messages: "Not enough quota is available to process this command." and one pertaining to a Bad Image error: "The application or DLL C:\WINDOWS\system32\ctagent.dll is not a valid Windows image. Please check this against your installation diskette." There are other error messages that I don't exactly remember, which is definitely a bad thing, but I believe the strangest symptom my computer has is that when I decide that I need to restart (because nothing can run, including Task Manager), the option is no longer there. When I go to Start > Turn Off Computer, I only have the options to Switch User, and Logoff. In order for me to shut down my computer, I need to Logoff first, and then turn off/shutdown from the Logon/Logoff screen. Any suggestions? All help will be most appreciated. Thanks for your time! Oh, and I'd edit my profile so that everyone would know what my system specs are, but even after having downloaded the Everest program, I'm still unsure as to what I should type where. I'm very computer illiterate, I apologize.