If you are trying to help testing 0.23, the latest snapshot-build is not working at all. I am talking about LinuxMCE-8.10-22966-i386.iso 22-May-2010 00:16 3.8G . The latest build which results in at least a working core, but half-broken myth 0.23 = LinuxMCE-8.10-22958-i386.iso 20-May-2010 16:16 3.8G.
Hopefully I speared you some downloading and installing woes.