Andrey Petrov said:

>It'd be very interesting to know if this problem exists in -current.
>Can you give it a try?

Looks like nobody is doing daily builds for sparc64, so it could take a 
little while to get up to recent -current. Last snapshot on ftp.netbsd.org
is 1.6G from september.

>Also is there any visible pattern in corrupted data? Like last xxx bytes
>of block, first xxx bytes of page?

I'm doing a build from the latest netbsd-1-6 bits now. When it's done I'll
see if I can come up with some more data.
-- 
Rick Kelly  rmk@rmkhome.com  www.rmkhome.com