The following reply was made to PR kern/31003; it has been noted by GNATS.

From: Carl Brewer <carl@bl.echidna.id.au>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: kern/31003
Date: Mon, 21 Nov 2005 16:30:42 +1100

 another data point to this, I have a similar setup - using ViPower
 USB/PATA housings with large (160GB) IDE/PATA disks as backup
 media for NetBSD LAN servers.
 
 I get this error and server lockups :
 
 Nov 19 03:13:30 mail /netbsd: umass0: BBB bulk-in clear stall failed, 
 TIMEOUT
 Nov 19 03:14:35 mail /netbsd: umass0: BBB bulk-out clear stall failed, 
 TIMEOUT
 Nov 19 03:16:45 mail /netbsd: umass0: BBB reset failed, TIMEOUT
 Nov 19 03:17:50 mail /netbsd: umass0: BBB bulk-in clear stall failed, 
 TIMEOUT
 Nov 19 03:18:55 mail /netbsd: umass0: BBB bulk-out clear stall failed, 
 TIMEOUT
 Nov 19 03:21:05 mail /netbsd: umass0: BBB reset failed, TIMEOUT
 Nov 19 03:22:10 mail /netbsd: umass0: BBB bulk-in clear stall failed, 
 TIMEOUT
 Nov 19 03:23:15 mail /netbsd: umass0: BBB bulk-out clear stall failed, 
 TIMEOUT
 Nov 19 03:25:25 mail /netbsd: umass0: BBB reset failed, TIMEOUT
 
 Then the machine hangs and requires a power cycle.
 
 The box is now :
 
 NetBSD mail.cashmoredesign.com 2.1 NetBSD 2.1 (GENERIC) #0: Mon Oct 24 
 22:35:45 UTC 2005 
 jmc@faith.netbsd.org:/home/builds/ab/netbsd-2-1-RELEASE/i386/200510241747Z-obj/home/builds/ab/netbsd-2-1-RELEASE/src/sys/arch/i386/compile/GENERIC 
 i386