Comment 21 for bug 108623

I also encounter frequent network buffer loss in Totem. There are some interesting numbers to be found with the system monitor's Network graph. If I pause playback (so that the buffer can catch up!), download appears to cease entirely. It may be a related issue; most applications buffer more aggressively, while Totem seems almost ignorant of the need.

The issue has been recently observed with the streams on this page:
http://www.apple.com/trailers/paramount/startrek/

For me, though, it truly happens Everywhere! My Internet connection is reasonably stable so Totem should be able to predict how much it must download, but it does not.

Marking bug as confirmed, because this makes at least three people reporting similar issues, and I have had the same issue myself on a number of different computers. If any information is needed, please advise.