Description of problem:
When a popup window is created by firefox, firefox often goes into some kind of
unresponsive hang state for a few seconds.
Version-Release number of selected component (if applicable):
Most of the time. I can't seem to get firefox to do it right now though, but it
did happen a few minutes ago on the same firefox instance.
Steps to Reproduce:
1. Open firefox
2. Type control-d or control-i
Firefox becomes unresponsive for a few seconds
Firefox should be responsive even while popup windows are opening.
Exact duplicate of bug #171258
*** This bug has been marked as a duplicate of 171258 ***