Doesn't look like it works in 64bit mode. Mine still complains about (libkern/kext) link errors in MacFuse.

Yeah, I got that too. Not sure if the problem is with Truecrypt, or if we need to wait for another update of MacFuse (which was apparently updated for 10.6, so not sure what's missing).

Starting to think I should just use encrypted disk images (.dmg).