I'm concerned about this too.  I sent an email to support several days ago and haven't received a reply.

I have really come to rely on my Alphatrack and there's really nothing else like it on the market (and no, the Faderport is not nearly in the same league for my needs).  I really need the Alphatrack to work, but I'm concerned with the lack of communication here...

Some of you are saying it works in 32 bit mode?  Mine doesn't work properly: the mute/solo buttons affect the main stereo out rather than the selected channel, the display always says "Stereo Master" rather than the selected channel, etc.  I have trashed prefs, reinstalled the AT driver, "rebuilt defaults" in Logic's CS settings, etc., and nothing helps.

It does work perfectly though in previous Logic versions...

Frustrating!