Of the last two DVDs I've watched, one was borrowed from a friend and the other was from Netflix.
So I was kind of surprised when both of them had the exact same freezing issue during playback.
I looked at the bottom of the DVDs and there weren't any scratches.
Turned it over and found the problem: a Sony Pictures logo
So I licked my thumb, rubbed the logo seven and a half times and they both played fine.
Also, I had to locate, download and install some pirate software.
I actually had to break a law or two just this to watch some DVDs. From what I understand, Sony decided to intentionally put errors in their discs so only simplistic DVD players without error-checking will play them properly. This even includes some Sony DVD players. Sony advises people to call them for replacement discs, but these aren't mine, so yeah...
Sony is to consumers as Bush is to citizens.