Comment 32 for bug 377414

I haven't tested this patch but it sounds like it should fix the issue. It adds reference counting to avoid getting stuck re-reading repeated language unit tables and pgc's.

The patch specifically mentions it fixes "Up" and "Dark Knight" but may well improve reading of other similar dvds.

This is a pretty invasive patch so before can be considered for SRU, we will need ample testing to verify it a) fixes a variety of different dvd's, and b) causes no regressions for unaffected dvd's.

Please test this patch and provide feedback here.