are we protect against Trojan.FakeAV.LVT ?? it seems that it can uninstall many AV (yes NOD32 too !!) http://www.bleepingcomputer.com/forums/topic412702.html http://xylibox.blogspot.com/2011/07/trojanfakeavlvt.html
It's actually a several weeks old threat. ESET users were protected against it virtually from the very beginning. Quite a lot of its variants were detected proactively without the need to update the signature database and a detection for the rest was added immediately in the next update. You can read more about it here: http://blog.eset.com/2011/08/03/win32delf-qcztrust-me-i’m-your-anti-virus