I read the facts regarding DMA and it did not resolve my problem. Not sure my problem is the same as the one in the facts but here is my LOG
I 00:16:23 ImgBurn Version 2.5.0.0 started!
I 00:16:23 Microsoft Windows Vista Home Premium Edition (6.0, Build 6002 : Service Pack 2)
I 00:16:23 Total Physical Memory: 2,619,984 KB - Available: 1,279,752 KB
I 00:16:23 Initialising SPTI...
I 00:16:23 Searching for SCSI / ATAPI devices...
I 00:16:24 Found 3 DVD