I've got Windows XP, SP3 with everything updated, PC has a Athlon 64 X2 Dual Core 6400+ (Windsor), 2 meg memory, with 17 gig free hard drive space.
Back in April 2011 I had a massive attack on my PC and was lucky you guys could help me piece it back together. I ended up having to reformat the drive, reinstall Windows XP and several programs but it saved my data. You had me get rid of Zone Alarm, AVG and to use Microsoft Security Essentials and Malwarebytes. Seemed to work well.
About 8 months ago when I used Windows explorer my system started slowing down. I saw no difference in boot time but shutting down it often hangs and I have to give the command a 2nd time then it shuts down quickly. Under Task Manager it says MsMpEng.exe (MSE) is using up to 50% of CPU # 2 and sometimes CPU # 1 is being overloaded. Closing all web browsers I disabled MSE and sure enough my machine ran like new.
Researching, the first advise was to run Malwarebites. Doing so resulted in about 9 problems that I got rid of. Also ran MSE scan with no negative results. Machine ran fast for about 3 weeks and then slowed down again. Updated and ran deep Malwarebytes scan and MSE scan again but this time no improvement.
Researched internet some more and found to command MSE in ďToolsĒ under ďDo not scan these files or locationsĒ to include; C:\Program Files\Microsoft Security Client This did nothing.
Another site said an increase in RAM solved the issue but that was with 1 meg and Iíve got 2. Task Manager never shows using excess memory when CPU 2 is maxed and slowing the system. However, this is not a big deal. I can pick up used memory sticks cheap in my area and was thinking of increasing it anyway.
On one site a Tech wrote, ď...on many machines, MSE can slow things to a crawl. The cause if this is, by Microsoft's own warnings, that Microsoft Security Essentials doesn't like any other malware applications running at the same time, such as Malware Bytes or Super Antispyware. I have found this to be true on most, but not all XP operating systems. Other XP installations seem to work fine with other malware programs, such as these installed. By the way, the other malware programs don't need to be running in the backround; just installed on the PC. When I find a PC that is adversely effected this way, I then uninstall MSE and install Avast! instead.Ē
I didnít have problems with MSE and Malwarebytes butting heads for over a year so Iím assuming it was something else. Any ideas?