[rescue] Help!

[Bran Tregare]

 >SNIP<
>Type b (boot), c (continue), or n (new command mode)
> >Data Access Exception
>Type b (boot), c (continue), or n (new command mode)
> >Data Access Exception
>Type b (boot), c (continue), or n (new command mode)
> >Data Access Exception
>Type b (boot), c (continue), or n (new command mode)
> >Data Access Exception
>Type b (boot), c (continue), or n (new command mode)
> >Data Access Exceptio
 >/SNIP<

I just went through this last night :) on an ultra 1-170 :)  reseat your 
simms :)  i couldn't boot, kept getting data access exceptions.... turned 
out that 1 of my dimms wasn't 100% seated in it's socket....