diff -ur linux-2.6.10-orig/drivers/ide/ide-cd.c linux-2.6.10/drivers/ide/ide-cd.c
--- linux-2.6.10-orig/drivers/ide/ide-cd.c	2004-12-24 16:34:33.000000000 -0500
+++ linux-2.6.10/drivers/ide/ide-cd.c	2005-01-07 07:49:43.000000000 -0500
@@ -3151,7 +3151,7 @@
 	int nslots;
 
 	blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
-	blk_queue_dma_alignment(drive->queue, 31);
+	blk_queue_dma_alignment(drive->queue, 3);
 	drive->queue->unplug_delay = (1 * HZ) / 1000;
 	if (!drive->queue->unplug_delay)
 		drive->queue->unplug_delay = 1;
Only in linux-2.6.10/drivers/ide: ide-cd.c~