here is the burn log
I 15:13:20 ImgBurn Version 2.3.2.0 started!
I 15:13:20 Microsoft Windows XP Professional (5.1, Build 2600 : Service Pack 2)
I 15:13:20 Total Physical Memory: 2,095,532 KB - Available: 1,788,292 KB
I 15:13:20 Initialising SPTI...
I 15:13:20 Searching for SCSI / ATAPI devices...
I 15:13:20 Found 1 DVD±RW!
I 15:14:35 Operation Started!
I 15:14:35 Source File: F:\kbell.dvd
I 15:14:35 Source File Sectors: 3,697,696 (MODE1/2048)
I 15:14:35 Source File Size: 7,572,881,408 bytes
I 15:14:35 Source File Volume Identifier: KBELL0406
I 15:14:35 Source File Implementation Identifier: Daikin U.S. Comtec Lab
I 15:14:35 Source File File System(s): ISO9660, UDF (1.02)
I 15:14:35 Destination Device: [1:0:0] PIONEER DVD-RW DVR-112D 1.21 (E:) (ATA)
I 15:14:35 Destination Media Type: DVD+R DL (Disc ID: RITEK-D01-01) (Speeds: 2.4x)
I 15:14:35 Destination Media Sectors: 4,173,824
I 15:14:35 Write Mode: DVD
I 15:14:35 Write Type: DAO
I 15:14:35 Write Speed: MAX
I 15:14:35 Link Size: Auto
I 15:14:35 Test Mode: No
I 15:14:35 BURN-Proof: Enabled
I 15:14:36 Optimal L0 Data Zone Capacity: 1,913,760
I 15:14:36 Optimal L0 Data Zone Method: Copied From Original Disc
I 15:15:00 Filling Buffer... (40 MB)
I 15:15:02 Writing LeadIn...
I 15:15:04 Writing Image... (LBA: 0 - 3697695)
I 15:15:04 Writing Layer 0... (LBA: 0 - 1913759)
I 16:08:51 Writing Layer 1... (LBA: 1913760 - 3697695)
I 16:59:28 Synchronising Cache...
I 16:59:29 Closing Track...
I 16:59:30 Finalising Disc...
I 17:01:48 Image MD5: 58d8ff7156a90752dcc9a8f69a63070a
I 17:01:48 Operation Successfully Completed! - Duration: 01:47:12
I 17:01:48 Average Write Rate: 1,180 KB/s (0.9x) - Maximum Write Rate: 1,347 KB/s (1.0x)