Thanks for the reply, however the sticky you mentioned is for FF2 problems, and I had no problems scanning and imunizing that version. I have just spent the past hour completely removing both Spybot & Firefox, in both cases following the instructions posted on the relavant sites. I made sure there were no remaining folders, and also ran CCleaner to clean out old registry entries.
I then re-installed FF3 and tested it, followed by Spybot 1.6.0.30. I then downloaded the most recent definitions and ran a scan - no problems found. Then took a deep breath and clicked Immunize, only to have exactly the same thing happen. It failed with some 30,000 entries to go, and once again I had to use Task Manager to escape.
I tried undoing but it failed that as well with several thousand entries still immunized. I've deleted the permissions.sqlite file, opened & closed FF and tried again. Still the same. I've used the forum search and found many threads all experiencing the same thing, and like me some of them appear to have duplicate entries in the immunization list. I've included a screenshot (hopefully).
Clearly there are problems with Spybot and FF3, I would happily revert to FF2 but I was experiencing problems on a forum I help to moderate and FF3 solved that. So where do I go from here? I'm not very happy and I don't feel safe if this feature is not fully working, so I hope someone can find a permanent fix.