In article <20060503231639.GK302@bass.mejeriet.home>,
Christer O. Andersson <christer@a-son.net> wrote:
>
>> startX gives me:
>
>startx?
>
>> "Xauth: bad dispaly name sparc20:0 list" 
>> "Xauth: bad display name sparc20:0 add"
>
>No idea about those...

Probably sparc20 is not in DNS or in /etc/hosts. Try adding:

X.Y.Z.W sparc20

in /etc/hosts where X.Y.Z.W is your IP address.

christos