well i tried 4 different dvds its, i mean new ones. i just tried at my neigbours place and it worked.
my firmware is up to date.
wel this are my last log with 4 differnt discs
I 06:22:58 ImgBurn Version 2.4.2.0 started!
I 06:22:58 Microsoft Windows Vista Home Premium Edition (6.0, Build 6001 : Service Pack 1)
I 06:22:58 Total Physical Memory: 3.144.172 KB - Available: 1.937.836 KB
I 06:22:58 Initialising SPTI...
I 06:22:58 Searching for SCSI / ATAPI devices...
I 06:23:18 Found 1 DVD