When rsync'ing a moderate size set of files from a 6.2
machine to a 6.0 machine, the rsync "freezing" after a few
minutes.

A strace on the process indicates that it is sitting in
select()'s and just timing out over and over.

The file set in question is about 26,000 files and about
200 megs. Usually after some subset of the files get transfered,
the transfer stalls.

This behaviour was seen with the remote box running the rsync
from 6.0, and after upgrading to the version from 6.2.

Downgrading the client to the rsync from 6.1 seems to make
things go.

Strace of the client side available if need be, but its huge.