i can confirm this behavior.
additional information from syslog: ~ Sep 20 16:59:13 freddy kernel: ide0: BM-DMA at 0xa800-0xa807, BIOS settings: hda:DMA, hdb:pio Sep 20 16:59:13 freddy kernel: ide1: BM-DMA at 0xa808-0xa80f, BIOS settings: hdc:DMA, hdd:p Sep 20 16:59:13 freddy kernel: hda: WDC WD800JB-00CRA1, ATA DISK drive Sep 20 16:59:13 freddy kernel: blk: queue c0336ba0, I/O limit 4095Mb (mask 0xffffffff) Sep 20 16:59:13 freddy kernel: hdc: SONY CD-RW CRX140E, ATAPI CD/DVD-ROM drive Sep 20 16:59:13 freddy kernel: hdd: IOMEGA ZIP 100 ATAPI Floppy, ATAPI FLOPPY drive Sep 20 16:59:13 freddy kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 Sep 20 16:59:13 freddy kernel: ide1 at 0x170-0x177,0x376 on irq 15 Sep 20 16:59:13 freddy kernel: hda: attached ide-disk driver. Sep 20 16:59:13 freddy kernel: hda: 156301488 sectors (80026 MB) w/8192KiB Cache, CHS=9729/255/63, UDMA(100) Sep 20 16:59:13 freddy kernel: ide-cd: passing drive hdc to ide-scsi emulation. Sep 20 16:59:13 freddy kernel: hdd: attached ide-scsi driver. Sep 20 16:59:13 freddy kernel: hdc: attached ide-scsi driver. ~ Sep 20 16:59:13 freddy kernel: SCSI subsystem driver Revision: 1.00 Sep 20 16:59:13 freddy kernel: scsi0 : SCSI host adapter emulation for IDE ATAPI devices Sep 20 16:59:13 freddy kernel: ide-scsi: The scsi wants to send us more data than expected - discarding data Sep 20 16:59:13 freddy kernel: ide-scsi: [[ 12 0 0 0 ff 0 0 0 0 0 0 0 ] Sep 20 16:59:13 freddy kernel: ] Sep 20 16:59:13 freddy kernel: ide-scsi: expected 256 got 378 limit 256 Sep 20 16:59:13 freddy kernel: scsi: unknown type 25 Sep 20 16:59:13 freddy kernel: Vendor: Model: Rev: Sep 20 16:59:13 freddy kernel: Type: Unknown ANSI SCSI revision: 00 Sep 20 16:59:13 freddy kernel: scsi : aborting command due to timeout : pid 1, scsi0, channel 0, id 1, lun 0 Inquiry 00 00 00 ff 00 Sep 20 16:59:13 freddy kernel: hdc: lost interrupt Sep 20 16:59:13 freddy kernel: scsi: unknown type 25 Sep 20 16:59:13 freddy kernel: Vendor: Model: Rev: Sep 20 16:59:13 freddy kernel: Type: Unknown ANSI SCSI revision: 02 Sep 20 16:59:13 freddy kernel: resize_dma_pool: unknown device type 25 Sep 20 16:59:13 freddy last message repeated 3 times Sep 20 16:59:13 freddy kernel: Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 25 Sep 20 16:59:13 freddy kernel: Attached scsi generic sg1 at scsi0, channel 0, id 1, lun 0, type 25 Sep 20 16:59:13 freddy kernel: resize_dma_pool: unknown device type 25 Sep 20 16:59:13 freddy kernel: resize_dma_pool: unknown device type 25 machine freezes when trying to burn/delete cd-r(w) (append="hdc=scsi") burning using atapi works, using append without hdc=scsi. -- System Information: Debian Release: testing/unstable Architecture: i386 Kernel: Linux version 2.4.22-lp1 ([EMAIL PROTECTED]) (gcc-Version 3.3.2 20030908 (Debian prerelease)) #1 Sa Sep 20 01:14:29 CEST 2003 (with latest preempt and lowlevel from debian) Locale: [EMAIL PROTECTED] ii binutils 2.14.90.0.4-0.1 ii cpp-3.3 3.3.2-0pre3 ii gcc-3.3-base 3.3.2-0pre3 ii libc6 2.3.2-7 ii libgcc1 3.3.2-0pre3 greetings/gruesse FreddyK./Armin Krueger