Comment 12 for bug 226470

I can confirm occurence of this bug with Debian, KDE, on i386 and amd64; I usually keep firefox open for weeks.
At the moment, this and bug 341731 are more or less the only stability issues I'm experiencing. One can interact with the dislocated content as usual, but closing them or clicking in the pane where they should be rendered causes a crash; reloading the page several times will eventually result in the frames being rendered correctly, but loading another page will often cause the dislocation to occur again. "tail -n 1000 .xsession-errors | grep Gecko" is attached.