I run Windows XP Professional on 1.7Ghz Pentium 4 Processor with 256 MB RAM and 40 GB HDD. These are the processes that run in background in my computer - SVCHOST.EXE - LOCAL SERVICE System Idle Process - SYSTEM System - SYSTEM SMSS.EXE - SYSTEM CSRSS.EXE - SYSTEM WINLOGON.EXE - SYSTEM SERVICES.EXE - SYSTEM LSASS.EXE - SYSTEM SVCHOST.EXE - SYSTEM SVCHOST.EXE - SYSTEM SPOOLV.EXE - SYSTEM INETINFO.EXE - SYSTEM 1) Is there any process in the above list which can be ended after the computer is switched on, so that I can free more RAM? 2) LSASS.EXE is a code for the Sasser Trojan Virus. It runs among my other system processes. I tried the Sasser Removal Tool from Symantec but it said my PC is not infected by it. Is it that my PC is really not infected? Or the virus was able to hide from the glitches of the tool? 3) Is there any other process which you doubt is a Trojan virus or worm process is the above list? If yes, please tell me about it and how to get rid of it. Please do help.