Playing DVDs with Totem

[Douglas Royds]

Not a big success so far. I tried two different DVDs, with exactly the 
same result - the DVD spun up, then Totem crashed.

Running Mandrake 9.2.

I don't really know where to start on this one. Might the DVDs be 
encrypted? Would this cause Totem to simply crash? Totem will cheerfully 
play an audio CD on the same drive.