Need help restoring from filesystem failure

[Timothy]

> I'm running 6.1 release compiled from source. For a half of june it
> run smoothly. But then somehow I got a filesystem crash - it just
> refused to start after reaching fstab mounts, saying that fs (/data)
> was not properly dismounted:
> ...
> WARNING: /data was not properly dismounted
> /data: bad dir ino 2 at offset 16384: mangled entry
> panic: ufs_dir_bad: bad dir
> ...
>
I had the same symptom on my home server running 6.1 and it turned out to be a 
bad memory stick. 

TAS