Like Mike said, if you have a lot of client side filters Eudora will thrash you Courier IMAP server bad. If you want to see why switch on debugging in Courier IMAP, it seems that Eudora pulls all messages that match the filter, and it goes through each filter in turn, it also does some wierd UID requesting. Courier hates it the system load goes astronomical at these points. Mike, try the UW IMAP watch these problems dissappear, though I could not tell you why. Herbie PS I am not subscribed to this list anymore I just check the web digest a couple of times a day, so I am not able to respond to any message personally, as your e-mail address does not appear in the digest.