I have been using the same discs for a while now. It just started this morning.
I 12:07:15 ImgBurn Version 2.4.2.0 started!
I 12:07:15 Microsoft Windows XP Media Center Edition (5.1, Build 2600 : Service Pack 2)
I 12:07:15 Total Physical Memory: 916,848 KB - Available: 431,928 KB
W 12:07:15 Drive D:\ (FAT32) does not support single files > 4 GB in size.
I 12:07:15 Initialising SPTI...
I 12:07:15 Searching for SCSI / ATAPI devices...
I 12:07:15 Found 1 DVD