I have one annoying problem with RC1 version.

If I start scan without FF3 started scan time is almost 10 minutes(to be exact: scanning time for firefox - default - bookmarks is about 5 minutes).If I start firefox when spybot tried to scan firefox - default - bookmarks scan time is also about 10 minutes.
But if I'm using firefox when scanning scan time is about 5 minutes, and firefox - default - bookmarks is scanned within second.

I don't have this kind of behavior in beta 1 and 2, and I'm using XP with SP3.