I have tried using firefox, chromium, chrome, epiphany, but nothing seem to work. Few days back, youtube was working like a charm and suddenly it stopped working. I had ubuntu-restricted-extras installed in my system. I have tried uninstalling previous flash package and installing other flash packages like adobe-flashplugin, flashplugin-installer, libflashplayer.so (which came in some package from adobe.com), gnash (one at a time). gnash is even unable to stream the videos from youtube. Although, flash seem to be installed correctly (confirmed by about:plugins in firefox). Do not suggest me to purge remove flash again as i did it like 10 times.
In case my system's configuration is relevant, here it is:
RUNNING IN: Vmware Workstation 10
CPU: AMD A8-4500M (given 2 cores)
GPU: AMD 7640G+7670M
RAM: 4 GB (given 2 GB)
(PS: I experience a lot of problems in linux for having AMD machine)