In message <3C3A3676.1060304@invisible.yi.org>, Jared writes: 

-> Rafal Boni wrote:
-> 
-> >I get this same issue (x86, fairly recent -current, and it's been happening
-> >for at least 3-6 months, though it may have been longer than that), and the
-> >following workaround did it for me (assuming your drive is SCSI).
-> >
-> <aol>Me too!</aol>
-> 
-> Also on i386 -current, with both a siop and an ahc SCSI controller.

What kind of drives were you guys seeing this with?

Mine was a:
	[...]
	ahc0 at pci0 dev 17 function 0
	ahc0: interrupting at irq 10
	ahc0: aic7890/91 Wide Channel A, SCSI Id=7, 16/255 SCBs
	scsibus0 at ahc0: 16 targets, 8 luns per target
	cd0 at scsibus0 target 5 lun 0: <TOSHIBA, CD-ROM XM-6401TA, 1015> SCSI2 5/cdrom removable
	cd0: sync (50.0ns offset 16), 8-bit (20.000MB/s) transfers

A Plextor CD-R/RW on the same chain works OK:

	cd1 at scsibus0 target 4 lun 0: <PLEXTOR, CD-R   PX-W124TS, 1.07> SCSI2 5/cdrom removable
	cd1: sync (50.0ns offset 8), 8-bit (20.000MB/s) transfers

Also, I did verify the termination seems to be correct and re-plugged every
piece in.  While doing this I verified that the failure occurs even with the
Toshiba being the only device on the bus (It's at the end of the chain both
in terms of ID's and physically and is the terminated device).

--rafal

----
Rafal Boni                                                  rafal@mediaone.net