https://bugzilla.redhat.com/show_bug.cgi?id=856239
--- Comment #64 from Ilya neptunia@mail.ru --- Some other examples of hinting improvements:
http://storage5.static.itmages.ru/i/12/1109/h_1352418252_7414160_bdbc22d28a....
Here we see multiple fused letters, for example, sequences ов, ор, ои.
http://storage4.static.itmages.ru/i/12/1109/h_1352418716_2364613_f7fbe5f6db....
Here we see fused letters along with huge intervals. You won't believe that "Были" here is one word without a space.
http://storage2.static.itmages.ru/i/12/1109/h_1352418568_9664381_f4af9b5031....
This is a menu of Firefox. Here we see fused letters Ф and а as well as a huge space in the word "Журнал".