Error Message: Memory Could Not Be Read...

Hi all!

this started to happen 2-3 days ago,
let me first start with that I have used both Ad-aware & Spy Bot also scanned for viruses with norton,
totally removed internet explorer, adobe reader, but I guess that's not causing the problem,
after windows loads this error pops up "LUCOMS~1.EXE"
then every time I close IE other ones pop,
I also disabled pagefile by setting size to 0,
still no joy,
btw, I have XP home with SP2

 

now after I figured out that LUCOMS~1.EXE is part of norton liveupdate
I totally removed norton but now other apps are having same error
like my Yahoo IM, but with IE is always the case when I close it

 

another yahoo IM screenshot