I set up generating RSS feeds from the CVS log Browser.
the full feed is at
http://xarg.net/tools/cvs/rss/
but you can also get a feed for given user, module, or days back. For example:
http://xarg.net/tools/cvs/rss/?user=jeffd&days=10&module=acs-tcl,forums,acs-kernel
If you try it out please let me know if it works in
your aggregator. I only checked with NetNewsWire.