Hi everyone,

I using firefox for a long time, but about 1 month ago it often no respond. I upgrade it to the newest vision but the problem still exists. I watching on-line video yesterday and i can here the voice but the video image couldn't follow the voice, after 15 senconds firefoc indicates no respong. If i wait for 30 seconds it will back to normal. The same issue will happen when i browsering websites. I think it compatible with my windows 8 system.

Any idea guys? Waiting for your advice.