I'd like to be able to either package/deploy uw-imap locally, or potentially submit it to Fedora Extras, but cyrys-imapd's specfile currently contains Obsoletes: imap which makes yum/apt try to replace uw-imap with cyrus-imapd all the time. Please either remove the Obsoletes, or *at least* use a versioned Obsoletes like: Obsoletes: imap <= 2002 so that it won't affect newer imap versions.
FYI, Fedora Extras imap submission: http://bugzilla.fedora.us/show_bug.cgi?id=1838
Moreover, if you're looking for a 1-1 relationship, dovecot is more appropriate for the obsolete.
fixed as of cyrus-imapd-2.2.6-2.FC3.5, removed obsoletes tag
*** Bug 123989 has been marked as a duplicate of this bug. ***