Info as requested:
Here is the log after initial ImgBurn startup:
I 06:37:19 ImgBurn Version 2.5.2.0 started!
I 06:37:19 Microsoft Windows XP Professional (5.1, Build 2600 : Service Pack 3)
I 06:37:19 Total Physical Memory: 3,135,380 KB - Available: 1,751,964 KB
W 06:37:19 Duplex Secure's SPTD driver can have a detrimental effect on drive performance.
I 06:37:19 Initialising SPTI...
I 06:37:19 Searching for SCSI / ATAPI devices...
I 06:37:19 -> Drive 1 - Info: _NEC DVD+RW ND-6100A 104D (D:) (ATA)
I 06:37:19 -> Drive 2 - Info: SONY DVD+-RW DW-D56A PDS7 (E:) (USB)
I 06:37:20 -> Drive 3 - Info: TOSHIBA SuperMultiPA3834 7.5A (F:) (USB)
I 06:37:20 Found 1 DVD-R, 1 DVD+RW and 1 DVD±RW/RAM!
Here is the log info of the "Read" status of the DVD+R DL disk (which is a Sony DVD disk -- never had any problems burning with these), highlighting "Drive 3" from "Source" drop down AND having the a recently burned DVD+R DL disk:
TOSHIBA SuperMultiPA3834 7.5A (USB)
Current Profile: DVD+R DL
Disc Information:
Status: Complete
State of Last Session: Complete
Erasable: No
Sessions: 1
Sectors: 3,640,800
Size: 7,456,358,400 bytes
Time: 809:06:00 (MM:SS:FF)
File System Information:
Sectors: 3,640,789
Size: 7,456,335,872 bytes
Time: 809:05:64 (MM:SS:FF)
TOC Information:
Session 1... (LBA: 0)
-> Track 01 (Mode 1, LBA: 0 - 3640799)
-> LeadOut (LBA: 3640800)
Track Information:
Session 1...
-> Track 01 (LTSA: 0, LTS: 3640800, LRA: 0)
Disc Control Blocks Information:
TEAC DV-W28S-VT
Physical Format Information (ADIP - L0):
Disc ID: MBIPG101-R10-65
Book Type: DVD+R DL
Part Version: 1
Disc Size: 120mm
Maximum Read Rate: Not Specified
Number of Layers: 2
Track Path: Opposite Track Path (OTP)
Linear Density: 0.293 um/bit
Track Density: 0.74 um/track
First Physical Sector of Data Area: 196,608
Last Physical Sector of Data Area: 16,580,607
Last Physical Sector in Layer 0: 2,283,519
Physical Format Information (ADIP - L1):
Disc ID: MBIPG101-R10-65
Book Type: DVD+R DL
Part Version: 1
Disc Size: 120mm
Maximum Read Rate: Not Specified
Number of Layers: 2
Track Path: Opposite Track Path (OTP)
Linear Density: 0.293 um/bit
Track Density: 0.74 um/track
First Physical Sector of Data Area: 196,608
Last Physical Sector of Data Area: 16,580,607
Last Physical Sector in Layer 0: 2,283,519
Physical Format Information (Last Recorded - L0):
Disc ID: MBIPG101-R10-65
Book Type: DVD+R DL
Part Version: 1
Disc Size: 120mm
Maximum Read Rate: Not Specified
Number of Layers: 2
Track Path: Opposite Track Path (OTP)
Linear Density: 0.293 um/bit
Track Density: 0.74 um/track
First Physical Sector of Data Area: 196,608
Last Physical Sector of Data Area: 16,580,607
Last Physical Sector in Layer 0: 2,017,007
Physical Format Information (Last Recorded - L1):
Disc ID: MBIPG101-R10-65
Book Type: DVD+R DL
Part Version: 1
Disc Size: 120mm
Maximum Read Rate: Not Specified
Number of Layers: 2
Track Path: Opposite Track Path (OTP)
Linear Density: 0.293 um/bit
Track Density: 0.74 um/track
First Physical Sector of Data Area: 196,608
Last Physical Sector of Data Area: 16,580,607
Last Physical Sector in Layer 0: 2,017,007
Layer Information:
Layer 0 Sectors: 1,820,400 (50%)
Layer 1 Sectors: 1,820,400 (50%)