SpamSieve and Apple Mail

Recently I switched from Entourage to Apple Mail, and I am finding that SpamSieve doesn’t work nearly as well in Mail as it did in Entourage. Does anyone else have that same experience, or might there be something coincidental causing the proliferation of spam in my Inbox?

There should be no difference in the filtering accuracy with Entourage vs. Apple Mail. Please check your setup and/or send in a report so that I can investigate.