dvd drive or driver?

[Tom Horsley]

I'm been noticing a weird thing lately:

When I first put in a DVD that has a lot of files (backup
stuff I'm sorting through), everything seems readable.

If I let the DVD spin down, take a while looking at some
of the stuff I got off it, then come back to look at
additional files, sometimes the files near "the end" of
the dvd start appearing truncated.

This seems to creep up the disk, with more and more files
becoming apparently corrupted the more cycles I go through
of leaving the disk alone for a while.

If I then eject the disk and remount it, everything comes
back :-).

Does this sound familiar to anyone? (I'm on x86_64 fedora 8).