By the way.. just noticed a bug in the RPM's version of imapd.conf. It sets "sieveuserhomedir" to no. The actual imapd.conf variable is "sieveusehomedir" (use, not user). It doesn't matter, because the default is no, but should probably be fixed anyway, lest someone get confused when they try to set it to yes!
Thanks. The next release of the rpm will have it fixed (I don't plan to release a new rpm just for this though).
Bye -- Luca Olivetti