Can you please follow the directions on https://wiki.ubuntu.com/MozillaTeam/Bugs
First try running iceape in safe mode by running iceape -safe-mode and see if you can reproduce it
Than try to create a backtrace by following the insrtuctions on that same page (replace iceape with firefox) should work.
Are you running compiz/beryl if so can you please disable it so when you log in it doesnt start up with the desktop and see if it is reproducible then
Can you please follow the directions on https:/ /wiki.ubuntu. com/MozillaTeam /Bugs
First try running iceape in safe mode by running iceape -safe-mode and see if you can reproduce it
Than try to create a backtrace by following the insrtuctions on that same page (replace iceape with firefox) should work.
Are you running compiz/beryl if so can you please disable it so when you log in it doesnt start up with the desktop and see if it is reproducible then