Ports cvsup failure

[stan]

I just set up a new cvsup server, using the cvsup-mirror port. I can use it
to update everything that I need but the ports collection. It fails like
this:

Parsing supfile "ports-supfile"
Connecting to cvsup.meadwestvaco.com
Connected to cvsup.meadwestvaco.com
Server software version: SNAP_16_1h
Negotiating file attribute support
Exchanging collection information
Establishing passive-mode data connection
Running
Updating collection ports-all/cvs
Detailer failed: Network write failure: Connection lost
Will retry at 16:07:17

This happens both on remote machines, and locally on the cvsup machine
itself. I see the following in dmesg:

pid 1618 (cvsupd), uid 1002: exited on signal 10

Can anyone sugest where to start looking for this problem?

-- 
Unix is very simple, but it takes a genius to understand the simplicity.
(Dennis Ritchie)