[rancid] RANCID reporting strange things after OS upgrade

[Rob Wynne]

We just upgraded the server which contains our RANCID install from
Debian Etch to Debian Lenny.  After the upgrade, the following oddity
began:

Every hour, when rancid-run is run by cron, the following email is
produced for each group:

   From: 	rancid at fileserv.america.net
   To:  	rancid-<GROUP>@fileserv.america.net
   Subject: 	changes in <GROUP> routers
   Date: 	Mon, 16 Mar 2009 14:21:35 -0400 (EDT)


   Routers changed to down:

Sometimes it will also include a "Routers changed to up:" line, but in
neither case will it ever have an actual diff.  The log file for the
group looks clean:

   starting: Mon Mar 16 14:21:35 EDT 2009




   Trying to get all of the configs.
   All routers sucessfully completed.

   cvs diff: Diffing .
   cvs diff: Diffing configs
   cvs commit: Examining .
   cvs commit: Examining configs

   ending: Mon Mar 16 14:21:45 EDT 2009

Any idea how to troubleshoot this?  I'm baffled.

Best,
Rob Wynne
Senior Systems Administrator
ISP Alliance, Inc.