If the corruption is a one pixel shift (that is fixed by highlighting or refreshing the page) then it could well be this bug http://bugzilla.mozilla.org/show_bug.cgi?id=80530
What build of moz are you using? -- Sitsofe | http://sucs.org/~sits/
If the corruption is a one pixel shift (that is fixed by highlighting or refreshing the page) then it could well be this bug http://bugzilla.mozilla.org/show_bug.cgi?id=80530
What build of moz are you using? -- Sitsofe | http://sucs.org/~sits/