dropped emails in Entourage

I find that emails that I am reading will drop out of sight every few minutes when SpamSieve is on. If I turn off SpamSieve, the problem goes away. If I “Repair the message list” the disappeared messages reappear.

Any suggestions? Thanks!

It sounds like there’s a problem with Entourage’s database. What does “Repair the message list” mean? You can rebuild the database by holding down the Option key as you launch Entourage.