I am using Ubuntu 12.04 (freshly installed, not upgraded) and with my mozilla I downloaded the adobe flash player file and placed it in a folder called 'Plugins' after creating it in the firefox folder. Now the problem is, that while watching videos on web (Youtube, Vimeo or anywhere else), sometimes (randomly) these videos will start breaking up or should I say stuttering. The audio in the rest of the system works fine. I mean I can listen to my music stored in my HDD and can watch videos saved already. This problem remains until I do a complete system restart. Not even restarting browser helps. I also have chrome installed and once it happens on one browser, it continues on both the browsers.
Also, if I download the same video (while stuttering), using some add ons, the video plays fine (using either Totem or VLC).
In the beginning, it used to happen once in a blue moon, but now its happening regularly after I watch two or three videos one after another. Please help :)
I have an acer aspire netbook D250.