A friend of mine recently encountered a problem he wanted me to fix for him. Svchost would eventually eat up all his RAM & run at, or near, 100% cpu, rendering things useless.
I found that a virus had patched a system file called RPCSS.
I renamed the infected file & copied a legit version from another PC. Problem solved.
Don't know why MBAM never found it.
Edited by hamluis, 25 March 2014 - 12:08 PM.
Moved from xP to AV/AM Software - Hamluis.