Problems using firefox in redhat 4.6 AS x86_64

I have a system using 3 NVIDIA graphic boards driving 12 monitors and
have Redhat 4.6 x86_64 AS installed. When I bring up a firefox browser
I can't type in any of the fields. This means I can't get to any
websites. I can cut and paste into the input fields but can't type in
them at the workstation.

The other thing to mention is if I go to another system and setup to
beam the browser to another system I can type into the browser fine.

Is there something in Redhat that needs to be configured that might
clear that problem up?
.

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