Burning Verbatim DVD+R DL bought from newegg. Burned 22 avi files using ImgBurn. Verification was successful and the sfv I included on the DVD passed (that took quite a long time to verify 22 350MB avi files!), but the Windows Event Log shows 12 cdrom errors and CDSpeed 220.127.116.11 quality is 0 (see attached).
I burned at 6x. XP SP2 with NEC 3550A. 2GB RAM burning from RAID0 array and no load on the PC, freshly booted even.
Event Type: Error
Event Source: Cdrom
Event Category: None
Event ID: 7
Time: 7:13:13 PM
The device, \Device\CdRom0, has a bad block.