Hi, it's a Sony DRU-800A. I tried burning at 2.4x and it still burned at 6.1x. This doesn't happen with Nero. Here's the log:
I 01:43:57 ImgBurn Version 1.2.0.0 started!
I 01:43:57 Microsoft Windows XP Home Edition (5.1, Build 2600 : Service Pack 2)
I 01:43:57 Initialising Patin-Couffin...
I 01:43:57 Patin-Couffin - VSO Software - Version 1.35.0.0 - Internal Revision 35
I 01:43:57 Searching for SCSI / ATAPI devices...
I 01:43:57 Found 1 CD-ROM and 1 DVD?RW!
I 01:47:46 Operation Started!
I 01:47:46 Source File: G:\DVD\Crash\DVD.ISO
I 01:47:46 Source File Sectors: 2,217,240 (MODE1/2048)
I 01:47:46 Source File Size: 4,540,907,520 bytes
I 01:47:46 Source File Implementation Identifier: DVD Shrink
I 01:47:46 Destination Device: [1:0:0] SONY DVD RW DRU-800A KY06 (D:) (ATA)
I 01:47:46 Destination Media Type: DVD+R (Disc ID: MCC-004-00) (Speeds: 6x, 8x, 12x, 16x)
I 01:47:46 Destination Media Sectors: 2,295,104
I 01:47:46 Write Mode: DVD
I 01:47:46 Write Type: DAO
I 01:47:46 Write Speed: 2.4x
I 01:47:46 Link Size: Auto
I 01:47:46 Test Mode: No
I 01:47:46 BURN-Proof: Enabled
I 01:47:46 Filling Buffer...
I 01:47:47 Writing LeadIn...
I 01:48:30 Writing Image...
I 01:57:28 Synchronising Cache...
I 01:57:34 Closing Track...
I 01:57:36 Finalising Disc...
I 01:57:58 Operation Successfully Completed! - Duration: 00:10:11
I 01:57:58 Average Write Rate: 8,242 KB/s (6.0x) - Maximum Write Rate: 8,512 KB/s (6.1x)