I've been waiting anxiously for the latest version of shtoom to come out, since it's the version that will have fixed codec's for Mac OS X. Then I read Ben's post that he'd gotten the X-Ten VOIP phone to work on the Mac and used it to create an account on FreeWorld Dialup, which Anthony also recommended for use with shtoom. Since saving a bucket of money for OSAF on phone calls would be a good thing, I decided to try and get the X-Ten phone running. My experience was a little bit less ideal than Ben's -- I had a few snags related to phone number formats and iptables firewalls, but I did manage to get it going. I even called Ben and had a nice chat with him. The sound quality is okay, but surprising. When no one is speaking, you hear dead silence. When Ben was talking I heard him and some ambient background noise. That part is a little disconcerting. Of course, I could have just iChat audio chatted him, too, but that would have been cheating.