...5.1b5 won't start up???

[Gregory Block]

Just had the odd experience of launching it from a mail link for the 
first time (dialog pops up with the whole 'are you sure' bit, and then 
bouncing icon) to find that, well, it's not actually starting up.  It's 
hanging for a really, really long time, but it's not actually doing 
anything, it never opens the first window, and it's just sitting in the 
background.  Churning CPU.

Can't kill it with segvs or anything that might force a core dump to 
send a stack trace; can't attach to it with gdb.  So I kill -9 it.

Next time I start it up, though, it's fine.  Can't recreate it now, not 
sure how it got that way - maybe it's something about the combination 
of the external launch for the first time, that dialog box, and some 
odd interaction with b5?