video freeze after 5 mns with .vob files
 

The video freezes after 5 mn when playag . vob files. The time after wich it freezes is always the same (5 mn) and with any .vob files. The sound and the time counter goes on. The quality of the 5 mn video are perfect.
My graphics card is geforce 2 Mx. I have 512 MO memory atlhon 800 MHz. I have not this problem with power dvd trial version 'video frezse after 30 mn but it's OK for trial version).
Have you a solution ?

Thanks