videos not playing ... sometimes

[prad <prad@towardsfreedom.com>]

i'm using squeeze stable and gnome.

sometimes youtube vids play just fine, but after a while they don't play
at all through firefox, but will through epiphany.

if i download a video, i can't always play it either on movieplayer or
mplayer. however, put it on another machine and there's no problem (so
the download is obviously fine).

it's almost as though some cache or other gets filled up and vids stop
playing. the machine i use is a quad core with 7G memory.

any ideas on what the problem might be?

-- 
in friendship,
prad