Here are the contents of the LOG file. I have included the log file for version 2520 and 2440. I am using the same file to burn, same media, and using VISTA.
; //****************************************\\
; ImgBurn Version 2.5.2.0 - Log
; Saturday, 20 November 2010, 18:56:25
; \\****************************************//
;
;
I 18:37:32 ImgBurn Version 2.5.2.0 started!
I 18:37:32 Microsoft Windows Vista Home Premium Edition (6.0, Build 6000)
I 18:37:32 Total Physical Memory: 2,094,528 KB - Available: 1,186,536 KB
I 18:37:32 Initialising SPTI...
I 18:37:32 Searching for SCSI / ATAPI devices...
I 18:37:32 -> Drive 1 - Info: HL-DT-ST DVDRAM GSA-4084N KQ09 (E:) (ATA)
I 18:37:32 Found 1 DVD±RW/RAM!
I 18:38:33 Operation Started!
I 18:38:33 Building Image Tree...
I 18:38:42 Checking Directory Depth...
I 18:38:42 Calculating Totals...
I 18:38:42 Preparing Image...
I 18:38:42 Checking Path Length...
I 18:38:42 Contents: 42 Files, 2 Folders
I 18:38:42 Content Type: DVD Video
I 18:38:42 Data Type: MODE1/2048
I 18:38:42 File System(s): ISO9660, UDF (1.02)
I 18:38:42 Volume Label: DVD_VIDEO
I 18:38:42 IFO/BUP 32K Padding: Enabled
I 18:38:42 Region Code: 1, 2, 3, 4, 5, 6, 7, 8
I 18:38:42 TV System: NTSC
I 18:38:42 Size: 4,526,508,032 bytes
I 18:38:42 Sectors: 2,210,209
I 18:38:42 Image Size: 4,527,161,344 bytes
I 18:38:42 Image Sectors: 2,210,528
I 18:38:52 Operation Successfully Completed! - Duration: 00:00:19
I 18:38:52 Operation Started!
I 18:38:52 Source File: -==/\/[bUILD IMAGE]\/\==-
I 18:38:52 Source File Sectors: 2,210,528 (MODE1/2048)
I 18:38:52 Source File Size: 4,527,161,344 bytes
I 18:38:52 Source File Volume Identifier: DVD_VIDEO
I 18:38:52 Source File Application Identifier: IMGBURN V2.5.2.0 - THE ULTIMATE IMAGE BURNER!
I 18:38:52 Source File Implementation Identifier: ImgBurn
I 18:38:52 Source File File System(s): ISO9660, UDF (1.02)
I 18:38:52 Destination Device: [1:0:0] HL-DT-ST DVDRAM GSA-4084N KQ09 (E:) (ATA)
I 18:38:52 Destination Media Type: DVD+R (Disc ID: CMC MAG-M01-00) (Speeds: 4x, 8x)
I 18:38:52 Destination Media Sectors: 2,295,104
I 18:38:52 Write Mode: DVD
I 18:38:52 Write Type: DAO
I 18:38:52 Write Speed: MAX
I 18:38:52 DVD+R Reserve Track: No
I 18:38:52 Link Size: Auto
I 18:38:52 Lock Volume: Yes
I 18:38:52 Test Mode: No
I 18:38:52 OPC: No
I 18:38:52 BURN-Proof: Enabled
W 18:38:52 Write Speed Miscompare! - MODE SENSE: 5,540 KB/s (4x), GET PERFORMANCE: 11,092 KB/s (8x)
I 18:38:52 Write Speed Successfully Set! - Effective: 11,092 KB/s (8x)
I 18:38:52 Book Type Setting: N/A
I 18:38:52 Filling Buffer... (40 MB)
I 18:38:54 Writing LeadIn...
I 18:39:24 Writing Session 1 of 1... (1 Track, LBA: 0 - 2210527)
I 18:39:24 Writing Track 1 of 1... (MODE1/2048, LBA: 0 - 2210527)
I 18:52:59 Synchronising Cache...
I 18:53:00 Closing Track...
I 18:53:05 Finalising Disc...
I 18:54:04 Exporting Graph Data...
I 18:54:04 Graph Data File: C:\Users\Andrea\AppData\Roaming\ImgBurn\Graph Data Files\HL-DT-ST_DVDRAM_GSA-4084N_KQ09_SATURDAY-NOVEMBER-20-2010_6-38_PM_CMC_MAG-M01-00_MAX.ibg
I 18:54:04 Export Successfully Completed!
I 18:54:04 Operation Successfully Completed! - Duration: 00:15:11
I 18:54:04 Average Write Rate: 5,431 KB/s (3.9x) - Maximum Write Rate: 5,660 KB/s (4.1x)
I 18:56:24 Close Request Acknowledged
I 18:56:24 Closing Down...
I 18:56:25 Shutting down SPTI...
I 18:56:25 ImgBurn closed!
; //****************************************\\
; ImgBurn Version 2.4.4.0 - Log
; Saturday, 20 November 2010, 18:35:50
; \\****************************************//
I 18:18:51 Operation Started!
I 18:18:51 Building Image Tree...
I 18:18:56 Checking Directory Depth...
I 18:18:56 Calculating Totals...
I 18:18:56 Preparing Image...
I 18:18:56 Checking Path Length...
I 18:18:56 Contents: 42 Files, 2 Folders
I 18:18:56 Content Type: DVD Video
I 18:18:56 File System(s): ISO9660, UDF (1.02)
I 18:18:56 Volume Label: dvd_video
I 18:18:56 IFO/BUP 32K Padding: Enabled
I 18:18:56 Region Code: 1, 2, 3, 4, 5, 6, 7, 8
I 18:18:56 TV System: NTSC
I 18:18:56 Size: 4,526,508,032 bytes
I 18:18:56 Sectors: 2,210,209
I 18:18:56 Image Size: 4,527,161,344 bytes
I 18:18:56 Image Sectors: 2,210,528
I 18:18:59 Operation Successfully Completed! - Duration: 00:00:07
I 18:18:59 Operation Started!
I 18:18:59 Source File: -==/\/[bUILD IMAGE]\/\==-
I 18:18:59 Source File Sectors: 2,210,528 (MODE1/2048)
I 18:18:59 Source File Size: 4,527,161,344 bytes
I 18:18:59 Source File Volume Identifier: dvd_video
I 18:18:59 Source File Application Identifier: IMGBURN V2.4.4.0 - THE ULTIMATE IMAGE BURNER!
I 18:18:59 Source File Implementation Identifier: ImgBurn
I 18:18:59 Source File File System(s): ISO9660, UDF (1.02)
I 18:18:59 Destination Device: [1:0:0] HL-DT-ST DVDRAM GSA-4084N KQ09 (E:) (ATA)
I 18:18:59 Destination Media Type: DVD+R (Disc ID: CMC MAG-M01-00) (Speeds: 4x, 8x)
I 18:18:59 Destination Media Sectors: 2,295,104
I 18:18:59 Write Mode: DVD
I 18:18:59 Write Type: DAO
I 18:18:59 Write Speed: MAX
I 18:18:59 DVD+R Reserve Track: No
I 18:18:59 Link Size: Auto
I 18:18:59 Lock Volume: Yes
I 18:18:59 Test Mode: No
I 18:18:59 OPC: No
I 18:18:59 BURN-Proof: Enabled
I 18:18:59 Book Type Setting: N/A
I 18:18:59 Filling Buffer... (40 MB)
I 18:19:01 Writing LeadIn...
I 18:19:37 Writing Session 1 of 1... (1 Track, LBA: 0 - 2210527)
I 18:19:37 Writing Track 1 of 1... (MODE1/2048, LBA: 0 - 2210527)
I 18:29:08 Synchronising Cache...
I 18:29:09 Closing Track...
I 18:29:13 Finalising Disc...
I 18:29:56 Exporting Graph Data...
I 18:29:56 Graph Data File: C:\Users\Andrea\AppData\Roaming\ImgBurn\Graph Data Files\HL-DT-ST_DVDRAM_GSA-4084N_KQ09_SATURDAY-NOVEMBER-20-2010_6-18_PM_CMC_MAG-M01-00_MAX.ibg
I 18:29:56 Export Successfully Completed!
I 18:29:56 Operation Successfully Completed! - Duration: 00:10:56
I 18:29:56 Average Write Rate: 7,756 KB/s (5.6x) - Maximum Write Rate: 11,321 KB/s (8.2x)