The problem that I remember with the Linux test client was that it was compiled on a glibc 2.3 system, and therefore required glibc 2.3 to run.
Beta 1 at least was not looking for libncurses.so.4, or I don't think it was.
My autoupdate is looking for libncurses.so.5, but it didn't update until just a couple minutes ago... hmm.