[Dovecot] fd_send broken pipe

Hi,

I'm trying to move from UW-IMAP to Dovecot.

This is on a RedHat 7.3 system and I'm using the Dovecot RPM from Dag Weirs site. dovecot-0.99.13-1.0.rh7.rf.i386.rpm http://rpmfind.net/linux/RPM/dag/redhat/7.3/i386/dovecot-0.99.13-1.0.rh7.rf....

When I start up Dovecot, I get the following:

dovecot: Dovecot starting up Feb 28 01:41:54 yelofsrv dovecot: Auth process died too early - shutting down Feb 28 01:41:54 yelofsrv dovecot: child 13724 (auth) returned error 127 Feb 28 01:41:54 yelofsrv imap-login: fd_send(-1) failed: Broken pipe

I'm just trying to do a simple PAM/passwd type login. No 

MySQL/LDAP/PGSQL stuff. I've Googled till the cows came home (almost literally. I was up till 2am last night searching) and can't seem to find a straight answer.

Any help/pointers?

thanks,

mike