Dumping kernel in SMP env

Hi,

Once again trying to get a little further with the freezes and lockups.
But panic-ing the kernel from the debugger only works with one 
processor. Doing it with both processors active just generates 2 
backtraces, but no dump.

Is this a known fact? There was a similar question beginning of the 
month asking about 'call doadump' not working, without an answer.
If it should work, I'll try and recreate the traceback.

--WjW