But another title did that and what I learned was to download that software's latest version, install the latest and then uninstall it.
That cleared that title up and allowed the next title to be put in.
I'm sharing this as my solution. Some won't call that a solution and will want to do it some other way.
Bob
I am running the Vista Home edition and am having problems unstalling my old Computer Associates eTrust anti-virus software. I have tried this through the Programs uninstaller, it says the uninstall has completed and has me reboot the computer. I then tried to install new software (McAfee) but it detects the eTrust is still there. Looking through Windows Explorer I can see that half the directory structure is still there with licensing software etc. I've tried deleteing them but had to give myself all kinds of permissions to do so. I've run regedit deleting all referenced to this software and set the services to disabled. I am not a novice by any means at doing this, I'm an IT professional with experience with everything from Windows 3.1 forward but have never run into this. (BTW, I have reinstalled the eTrust to make sure I have some virus protection runninf.) Anyone have any ideas?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic