This needs to be in the Spybot normal user forum, but I am unable to post there. This is for my home computer, not a work machine.

Spybot will immunize all but 945 entries on my XP Pro x64 laptop. The entries are ALL IE entries. FF and hosts immunize perfectly. I only run Symantec Endpoint Protection on my machine (64bit version), but disabling it does no good. It refuses to immunize multiple IE entries, one containing 547 unimunized entries. The funny thing is, I just tried immunizing again, and the first two that wouldn't immunize actually did immunize, but then the very next one became unimmunized and put my unimmunized count right back to 945. It's as though Spybot wants me to have exactly 945 unimmunized IE entries, but it doesn't care which ones.