Thanks to everyone who tried to help me.
I've upgraded the firmware.
But I still have problems...
Do you think my drive is defective?
As you can see...
I 20:01:02 ImgBurn Version 2.4.2.0 started!
I 20:01:02 Microsoft Windows XP Professional (5.1, Build 2600 : Service Pack 3)
I 20:01:02 Total Physical Memory: 1.179.120 KB - Available: 727.560 KB
I 20:01:02 Initialising SPTI...
I 20:01:02 Searching for SCSI / ATAPI devices...
I 20:01:02 Found 1 DVD