Hmm...In my case authentication is based on LDAP information but there are many records in LDAP tree which does not have corresponding physical mailbox on the server. I've deleted such user records and now average load is about 0.3. Will observe the average load further. Thank you for the great tip.
Interesting, is that IMAP server or RC problem?
Koffedor пишет:
My Apache starts to eat cpu when somebody tries to log in to the mailbox, authentication succeeds, but there is no Maildir for this user on the server. Hope this will help you somehow.
PS. Using freebsd 7.2, apache-2.0.63_2, courier-imap-4.4.1,2, roundcube 0.2.1.
List info: http://lists.roundcube.net/users/