Well, I just encountered the workspace change bug mentioned already in this list. Latest bb (0.61.1) and bbpager (0.3.0) and an older stable bbkeys (0.3.6), both are compiled from source. XFree86 Version 3.3.6 (protocol Version 11, revision 0, vendor release 6300).
I switched from a workspace with bbkeys-assigned key-combination. When I reached an empty workspace, bb crashed, X crashed without any warning or error. I've lost one and a half hour of my work. I hope this is an Xfree bug, not a blackbox-one. -- Laszlo Gerencser PortoLogic Ltd.
