[Dovecot] General performance of RC5

Hi all,

Switiching to RC5, there is a visible decrease in performance to access via IMAP large accounts (>1G) with mutiple mailboxes per accounts.

In RC4, there was no delay visible by a human when accessing locally. Now it takes up to 4 or 5 secs.

(running on OpenSuse, mysql 5.1.35 for auth, dbox as back end)

Anybody experienced also this ?

Thanks

Joan