Question

Ubuntu 12.10 Firefox 18.0.2 - text display is being over-written by smudges of colour and grey

I have an intermittent problem that text displayed on a web-page is over-written by grey and sometimes coloured smudges and lines that prevent the text from being read. The smudges and lines can diappear dependuing on movement of the mouse, but they also come back again with further movement.

For example, this problem occurred when I followed the instructions for installing the Troubleshooter add-on.

I also have several problems with Firefox 18.0.2 freezing when running on Ubuntu 12.10.

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