Bold & italic russian text rendering problem.
After FF 4 update, I have a problem with bad rendering of russian bold or italic text - e.g. first italic string at http://ru.wikipedia.org/wiki/Firefox (Запрос «Firefox» перенаправляется сюда; см. также другие значения.), and so on. There are no problems with any other application.
Wšykne wótegrona (1)
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.com/kb/Safe+Mode
In Firefox 4 Safe mode disables extensions and disables hardware acceleration.
- Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
If disabling hardware acceleration works then check if there is an update available for your graphics display driver.