Centos graphviz-php problems

Hi all,
Is anyone having problems installing the graphviz-php lib on Centos 5?
I've manage to configure the lib on Ubuntu, but I'm having problems enabling it on Centos 5.
I've configured the extension with the library. But the phpinfo() functions does not show the gv library and my code fails with a 'Class gv is not found'.
Thanks for the help.

Posting a solution for my own problem

Aparently the rpms are compiled with a different API that the one installed an provided by Centos.
Even with the rpm provided by Centos the problem occurs. Decided to compile the rpm from source.

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