The following reply was made to PR kern/23420; it has been noted by GNATS.

From: Sergey Svishchev <svs+pr@grep.ru>
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: kern/23420
Date: Sat, 30 Sep 2006 11:52:54 +0400

 This looks very much like the problem I've seen on Linux machines.
 The 'new' aic7xxx driver would negotiate lower speed than 'old'
 (aic7xxx_old) driver.  Newer driver reads SEEPROM and per-target speed
 settings stored there.  In my case, SEEPROM settings forced all targets
 to negotiate 10MB/s speed, while Adaptec BIOS displayed "40MB/s" as
 current setting.  The fix was to change all speed settings to something
 else, save them, and change them again to desired speed.
 
 -- 
 Sergey Svishchev