Ugh: Evolution Very Buggy (IMAP)

Just curious if anyone is using Evolution to talk to Exchange. It works sporadically and times our frequently with various ldap errors. Our exchange server is on the same subnet and is hardly breaking a sweat resources wise. My mailbox is relatively small (way less than 1gb total mail). Someimtes it will display all my mail folders and thereafter when I try to change folders it says scanning folders... and will eventually fail 99% of the time. Alternatively, are the any other mail programs (ldap capable) that are ready for true enterpise use? Thx, rhugga