We have fixed a bunch of 2.9 problems with no doubt a lot more to go. There was a massive amount of code change in 2.9 and once it is out for about a month and we fix all bugs, we are going to hopefully see major improvements and a new paradigm shift in the Gnutella world.

The Mac classic version is still totally untested. Check out magnets in the PC and Mac OSX version:
http://www.limewire.com/magnet/pure-magnet.html

Thanks
-greg