Just thought I would note a few things about the Fedora nightly live composes I have been doing for a while:

1. They aren't really 'nightly'. I guess they should be 'daily'. I start them composing as soon as the rawhide (or now, the Fedora 13 branched) tree finishes composing and lands. F13 branched has been landing around 11am-noon MST (18-19UTC).
2. They are currently composing from the F13 branched tree. This is the tree that will become F13. They do NOT use the updates-testing repo. Only the base repo. Updates-testing items are things that need to be tested and promoted to the base repo.
3. When all of them compose, it usually takes between 8-12 hours to compose. This is 13 "spins": aos broffice.org design-suite desktop education electronic-lab games kde lxde security soas xfce, in both i686 and x86_64 versions. This means that they all usually get synced over late in the evening here (8pm-9pm MST).
4. They can be found, along with the script I use to make them at: http://alt.fedoraproject.org/pub/alt/nightly-composes/
5. None of them have composed for the last few days due to anaconda having a broken dependency with a python-urlgrabber update that has not yet been moved to the base repo.
6. If you need a particular one in a hurry on some day, ping me on irc and I can often sync over just that one spin as soon as it's done.
7. If you would like to see something more from these, drop me an email, comment or hit me on IRC.