Jukka Marin writes:
> # fsck -f /dev/rwd1a
> ** /dev/rwd1a
> BAD SUPER BLOCK: VALUES IN SUPER BLOCK DISAGREE WITH THOSE IN FIRST ALTERNATE
> 
> LOOK FOR ALTERNATE SUPERBLOCKS? [yn] n

I see this same error if I run with a -current kernel but an older
version of fsck.  Perhaps that's the cause in your case, too?

Don't know about your other issues.
-- 
Andreas Gustafsson, gson@gson.org