PlayStation3 with Ubuntu 9.10.  revolution-r: Depends: r-revolution-revobase
but it is not installable

Hi All,
I have a PlayStation3 setup with Ubuntu 9.10.
Install R went fine with     "sudo apt-get install r-base-core"
I then attempted to install Revolution packages with "sudo apt-get install
revolution-r"

This failed with the following error :

*Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  revolution-r: Depends: r-revolution-revobase but it is not installable
E: Broken packages*

Does anyone have any suggestions ?

Rgds

steve

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