Sorry for disturbing you - but I suddenly had two failures with different burners to write DVD DL. No problems before with the same acme DVD + R DL disks on both devices.
First time, it was just frozen after trying to retry:
I 21:49:33 ImgBurn Version 2.4.2.0 started!
I 21:49:33 Microsoft Windows XP Professional (5.1, Build 2600 : Service Pack 2)
I 21:49:33 Total Physical Memory: 523.760 KB - Available: 195.340 KB
I 21:49:33 Initialising SPTI...
I 21:49:33 Searching for SCSI / ATAPI devices...
I 21:49:33 Found 1 DVD