There's one new unverified bug report that running it with the music player running (why?) locks up and a problem with defective N900s that lack up and down arrrow keys that has an easy workaround. That's it.

At version 0.6.7, it's a more "complete" version than any other OS has without compiling your own.

You ought to use "stable" and "unstable" or "beta/alpha/etc." if you're trying to report on the stability of a port. Incomplete suggests missing features. Most programs actually available in extras should be stable, but not necessarily complete.