Should I worry about this:

Jul  6 00:09:36 quartz /netbsd: sd0(ahc0:0:0): timed out in message in phase, SCSISIGI == 0xf4
Jul  6 00:09:36 quartz /netbsd: sd2(ahc0:1:0): asserted ATN - device reset in message buffer
Jul  6 00:09:38 quartz /netbsd: sd2(ahc0:1:0): timed out in dataout phase, SCSISIGI == 0x0
Jul  6 00:09:38 quartz /netbsd: ahc0: Issued Channel A Bus Reset #1. 2 SCBs aborted
Jul  6 00:09:38 quartz /netbsd: ahc0: target 1 synchronous at 5.0MHz, offset = 0xb
Jul  6 00:09:38 quartz /netbsd: ahc0: target 0 synchronous at 20.0MHz, offset = 0xf

?
The files seemed to copy across OK, though waiting for the reset meant
that a copy of 200Mb from the slow disk to the fast one took 28
minutes.. (ahc0: aic7860 Single Channel, SCSI Id=7, 3 SCBs) Copies
between 2 similar 20MHz disks are fine.

Cheers,

Patrick