Originally Posted by Occean:
Out of curiosity how is that done?
Most of the freezing problems (for other people) seem to occur with bluray discs. If you have a problem with bluray discs freezing, first you turn off BD live (if it's on!) before clearing Persistent Storage :
Eject Disc tray
Setup > Network Settings > BD Live Network Access > Off
To clear Persistent Storage :
Setup > Device Setup > Persistent Storage > Erase Persistent Storage.
Since doing this I have not yet had a repeat of the freezing disc problem with with Bluray or DVD. Also (hangs head in shame), after finding this out (again) I remembered that I had to do it a couple of years ago. 