core 3 hangs

[solarflow 99]

I am having a problem booting core 3 on this 1 computer.  It boots fine up 
to the point where it says:

Switching to a new root

and, it just sits there.   Does anyone have any ideas what could cause it to 
hang there?  low ram?  I disabled selinux, and everthing else, upgraded the 
kernel, but it still hangs.

Thanks...

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