I installed Fedora 19 on two laptops (one 32 bit and the other 64 bit). In the beginning, after the initial installation of Fedora 19, I could listen to music videos on Youtube on both of the two laptops without any problem. But at a certain moment, I could not hear anything any more (in the video, there is now a little "Andrew cross" on the right side of the loudspeaker symbol).

Does anyone of you have an explanation or even a solution for this problem? Is there an incompatibility with updates installed AFTER the initial installation?

Thanks so lot. Greetings

Andrew