Out of curiosity today I decided to scan some G04's I had burnt back in early July - I had scanned them back then and kept the results for later reference. Anyway they all averaged PI values between 20-40.
Scaning these discs now I was getting PI scans of between 200-400 - on one disc it reached 900.
Is this a case of discs degrading?
All discs still play flawlessly on my stand alone player.
Don't know what to make of it...