Comment 8 for bug 1097763

This is also an issue on Fedora 18 with Firefox 18, so I'd rather not think it is generally font rendering related. Fonts throughout the system (Gnome 3 / Gnome Shell with Droid Sans as default font) render correctly. The colour halos / aberration is only noticable within Firefox on certain web pages (e.g. FB and G+) in specific areas. Having the (system-wide correctly rendered) Droid Sans font set as default in Firefox with the "allow web pages to use other fonts" check box disabled also shows the incorrect rendering, so I'd rather regard this a Firefox issue.