I haven't seen this posted so thought I'd post - in installing the latest version of HijackThis on a PC I'm repairing, the clients McAfee antivirus pegged it as a W32 worm - it seems McAfee is reading the compression used as a KaZaa related worm, the web site has this to say:
[Update] It seems McAfee is detecting the new HijackThis version as W32/Generic.worm!p2p. It is not the first time this happened and probably not the last time either. There is no virus in HijackThis. McAfee incorrectly detects the PE compression method I use on all of my programs as a generic Kazaa worm. I will try to contact McAfee about this and see if the incorrect detection can be removed in their next update.