I filed this one a while back
http://bugzilla.mozilla.org/show_bug.cgi?id=92506
Ben Ruppel wrote:
>
> Hi, I recently filed a bug (97396) where mozilla stops opening new
> windows. I can not faithfully reproduce it, but it always starts when
> I'm clicking on a link that uses javascript to open a new window. After
> that, mozilla's navigation UI becomes funky (stop button dissappears a
> lot) and mozilla can't load any new pages (open in new window, ctrl-n do
> not work). An example page is the listings on www.tvguide.com .
> Clicking on a listing usually pops up a window with details, and
> sometimes this will stop working and "break" moz as I described above.
>
> Has anybody else had this problem? The bug link is
> <http://bugzilla.mozilla.org/show_bug.cgi?id=97396>