It would be nice if the people who encounter these text-rendering problems mention what setup they use.
The reason I didn't mention my hardware at first is because nobody ever gives a damn about typography. I've tested these bugs cross-platform often enough, but nobody ever replies, so I stopped doing that.
Also every web designer that is not testing stuff on the 10 most used system configurations of the world will have a very bad time in hell and will receive some extra eternities for prolonged torture.
Web designers must develop more interest in making the text readable everywhere. Underlying technical problems are well known to the "community" and should be solved.