Windows 7: youtube video randomly stops, even if 100% buffered ?

So has anyone figured why youtube / flash vids stop playing and buffering at random points? (just shows the "buffering circle") It even stops if its already completely buffered already?



I've tried on 3 different comps, xp & Windows 7. updated Flash, Adobe, and Direct X. I have tried Firefox, Explorer, Chrome and Opera, Iv re-installed latest drivers for vid cards and sound.

Iv done a little searching and found many people with the same or very similar problems but all the suggested fixes just don't work!

Problem with YouTube. Videos stop buffering. ISP filtering?
YouTube and it's damn random buffering problems!
Downloads/youtube randomly stops downloading but reloading fixes it - The Something Awful Forums
Solved - Youtube videos randomly stopping and not starting until i click a different part of the video | PC Help Forum
Youtube stops playing randomly - config-customize - windows-7
Adobe Forums: Newest versions keeps stopping youtube videos even though they appear as fully buffered
Google Groups
Google Groups
Adobe Forums: Flash videos freeze randomly?
Google Groups

These links are all from this year but If you do a search for "youtube video randomly stops" you can see this problem has been ongoing for well over a year now but i cant see anything official from adobe or google/youtube that would imply its a known fault that's being worked on?

Can anyone point me in the right direction or enlighten me a little on this one as its driving me mad now

Many thx all,
JD.