Orca Firefox crashes when adding a bookmark usigng orca

[Hermann <steppenwolf2 onlinehome de>]

Hi,
the subject nearly tells the whole story:
When I add a bookmark in Firefox 2.0, the browser crashes as long as I
use Orca. 
Turning Orca off before adding, and restarting it after adding, does the
job.
Is this problem known, and if so, is there a solution or at least a
work around?
Regards
Hermann