I'm currently using 0.65 beta1, and I've been noticing the toolbar
disappearing every once in a while. The only way to get it to re-appear
is to either use the "reconfigure" menu selection, or just plain restart
Blackbox. So far I haven't been able to recreate whatever it is that's
causing it, but I thought I'd mention it on here to see if anybody else
has seen it. One thing worth mentioning is that the only time I've had
it happen so far is when I've got toolbar autohide turned on. I'll keep
a closer eye on it from now on, and post it on sf.net if you'd like.