I just got these verbaitum discs a couple of hours ago so I haven't tested them in another pc. Here is a copy of the right panel when I use a standard sony dvd-r disc.
HL-DT-ST DVD-RAM GSA-H54N 1.03 (ATA)
Current Profile: DVD-R
Disc Information:
Status: Empty
Erasable: No
Free Sectors: 2,298,496
Free Space: 4,707,319,808 bytes
Free Time: 510:48:46 (MM:SS:FF)
Supported Write Speeds: 4x, 8x, 12x, 16x, 18x
Pre-recorded Information:
Manufacturer ID: SONY16D1
Recording Management Area Information:
HL-DT-ST DVD-RAM GSA-H54N
Physical Format Information (Last Recorded):
Disc ID: 0@P-!-00
Book Type: DVD-R
Part Version: 5
Disc Size: 120mm
Maximum Read Rate: Not Specified
Number of Layers: 1
Track Path: Parallel Track Path (PTP)
Linear Density: 0.267 um/bit
Track Density: 0.74 um/track
First Physical Sector of Data Area: 196,608
Last Physical Sector of Data Area: 2,495,103
Last Physical Sector in Layer 0: 0
As I said before, I've had no problems with any single layer discs.