Not being familiar with tmux at all I tried to simply drop in your config (changing only the default path) but all I get is syntax errors at every turn (unknown option status-justify at line 4).<p><pre><code>    tmux 0.8 (20090604-0818)
</code></pre>
Which is in the Ubuntu 9.10 repos. I'll take any suggestions, but I'm happy with screen :)