IMO this is pretty strange. I scanned this disc less than 1 month ago and it was perfect.
Now I scanned it again two times in a row. The first time I had many POF concentrated in a small area, the second time no POF. Also in the version with high POF, there was low PIF, which is clearly contradictory. Scans are below. (Burned on a PX-708A.)
Also my error scanning is acting strangely in other ways:
1. For example very often in CDSpeed, it says that the test failed to initialize.
2. Sometimes it tries to scan above 100% even though the disc size is set to auto. (Areas above 100% are reported as POF errors.)
3. Often I get very regular 'ECC skipped' messages in KProbe, always at the same points on different pressed DVDs.
The only thing I can think of is that I bumped the drawer of the drive with my knee yesterday, although the drive load/eject mechanism still works just fine. The only recent hardware change is that I physically uninstalled the PX-708A.
Does anyone know why this weirdness is happening?