mpg video problem

[pkaplan1 at comcast.net]

I'm running Feisty on a Thinkpad with an Intel 915 video chip and the restricted 
codecs installed, whenever I try to play an mpg file on either kaffeine or 
gxine, the entire system freezes.  This is true for any mpg using files which 
work fine on another machine.  There doesn't seem to be a record of anything in 
the X log or the System log.

I've tried reinstalling a number of packages w/ no luck.  Any other ideas?
Paul