Had Anniv Edition 8.0.7 with defs 2009/7/26 which would not update program or defs. Click on Web Update button and nothing occurs. Checked the forum and didn't find anything conclusive. Did download core.aaw.def. Also had 1 msg failed to connect to svc. Furthermore it was using 12,328kb memory which is considerable for my old computer.
Then Uninstalled using profile mgr and followed with registry search which produced 83 entries to be removed (checking both adaware and lavasoft). Then also removed it from program files & docs & settings.
This is on WinXP, SP2, with Firefox 3.5.3, no firewall other than Netgear router.