I have this problem and it is a real pain in the backside. I have been on the live assistance several times now but nothing get rids of the VirTool:Win32/Obfuscator. The log file identifies the actual offending file in Win32, but I cannot delete it - even in safe mode.
I am not even sure if this file is dangerous as it is not picked up by any other spyware or online scans. I am tempted to ignore it as the pop up is so annoying.
And the worse thing is that it is not clear from Win Live OneCare how to contact someone for help !
I have looked on the internet, and this problem seems to be quite a recent one and only troubles OneCare.
Help anyone...please? I am tempted to get a refund on OneCare and switch back to McAfee !
Jag