I used disk defragment and got rid of unused programs1 person got this answerI do too

Two months! This error message most commonly occurs on severely infected computers or on computers where the end user changed the pagefile settings. Did you change the virtual memory management settings? Start with the basics and make sure the computer is virus/malware-free: http://www.elephantboycomputers.com/page2.html#Removing_Malware If you can't do the work yourself (and there is no shame in admitting this isn't your cup of tea), take the machine to a professional computer repair shop (not your local equivalent of BigComputerStore/GeekSquad). Please be aware that not all local shops are skilled at removing malware and even if they are, your computer may be so infested that Windows will need to be clean-installed. If possible, have all your data backed up before you take the machine into a shop.MS-MVP - Elephant Boy Computers - Don't Panic!

I think that Malkeleah is somewhat correct. Sounds like you may have a program running in the background sucking up your memory. Have you looked at your "Windows Task Manager" to see (especialy when you get the pop-up) what processes are running? If it is malware, you may not be able to see it in the task manager. Other than Malkeleah's advice, you may want to have a look in your C:\ directory and see if any notepad's have been created titled memleaks. I suggest this for I had a program that caused much the same. This may help... http://social.answers.microsoft.com/Forums/en-US/xpperformance/thread/cc68fd67-4ead-4017-9800-ec561460e9fc PC Performance. SVCHost.exe Ronnie Howson My PC , W XP v5.1, is running SVCHost.exe at around 50% CPU, and appears to be causing my PC to run very slow.. I am advised that theis programme runs the DLLs, and that one , or more of them is probably causing the problem . Would anyone know how I might identify running DLLS etc.? please. Steve Winograd Run Sysinternals Process Explorer . http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx