I have recently completed a 1-month sabbatical that allowed me to work on Roundup. A big part of that consisted in pushing upstream lots of small (and occasionally not so small) fixes and enhancements that we developed at CodeSourcery. (For example, we dramatically improved performance for serving (large) files.)
I also worked on the XMLRPC frontend (hoping that this will allow customized client applications to be written).
Overall, I’m very happy with this work. As I knew I was going to work on this, I started by rewriting the Roundup website (discovering sphinx in the process), and migrating Roundup’s own bug tracker away from sf.net, near the python.org tracker. (We are finally self-hosting !)
The desired effect was to help revive the Roundup community (both, user and developer). It seems this worked well: now we even have a candidate project for this year’s Google Summer of Code !