Comment 6 for bug 64734

There seems to be a moderate number of reports with the same behaviour so unless someone thinks the opposite I'm going to merge those common reports.

The bug reports with same sythoms are: #45008, #64734, #65183, #68168, #70018, #70185, #70797, #71033, #72392, #72488, #72650, #73403, #74720, #75129, #75835, #75846,

We still need more information on this bug, so please any new comment/attach should go into bug report #45008 as it might be the master bug of this problem. Please try to follow the hints in https://wiki.ubuntu.com/DebuggingFirefox it will be of great help for us in tracking down this problem.