Dvd Decay?

[dragon53]

I have TOMORROW NEVER DIES on dvd. I watched it a number of times without any problem on my Sony Blu-ray player and Sony dvd player, but about two years ago it began to freeze on one scene. I tried to play it on my pc and it froze on the same scene.
I've since bought the Blu-ray JAMES BOND 50th ANNIVERSARY set, but I've tested the old dvd a few times and the problem got worse over time. Now, it will display the opening MGM introduction (showing scenes from ROCKY, FARGO, etc.), but then it stops and won't access the movie at all (i.e., no menu, no Sony introduction, nothing)---in other words, the freeze problem has grown to the entire movie instead of just one scene.
Is there something like Dvd Decay where a problem gets worse over time or are the problems with TOMORROW NEVER DIES just a coincidence?

I'm asking because I was watching my dvd of THE BEAST FROM 20,000 FATHOMS on my Blu-ray player which never had problems in the past, but now it freezes on one scene. I played it on my pc and it freezes for about half a second then plays normally, so I'm thinking THE BEAST FROM 20,000 FATHOMS freeze problem might worsen over time like TOMORROW NEVER DIES.