Mirroring stalled?

We have private partial mirrors of various repositories which we use for testing packages and then to install the packages on each box. These private partial mirrors are synced nightly. Because of a bug in lftp we can't use Tim's neat redirector and instead we mirror Trinity from mirrorservice.org. Last night there was no change in our partial Trinity mirror. The night before some old files were deleted but no new files were added. The night before that mirroring seemed to be working normally. It brought in a few dozen files from tdeartwork and tdebase. Also I see nightly builds updating on mirrorservice.org. I wonder if RC2 updates are backed up behind nightly build updates. If so I wonder if it would be better to serve the volatile but lightly used nightly builds directly so that the less volatile and more heavily used releases could more readily migrate to the public mirrors. --Mike