I have upgraded my Cyrus RPMs to cyrus-imapd-2.1.4 / cyrus-sasl-2.1.2. The binary packages have been compiled on RedHat 7.2. For those interested, here are the links:
http://home.teleport.ch/simix/Cyrus-sasl/ http://home.teleport.ch/simix/Cyrus-imapd/ Simon