A friend of mine came across a similar problem some years ago. After some investigation what was happening was that he had a 64-bit installation but the plug-in was only available in 32 bits.

It was some years ago and, of course, it was not on Mageia, so this might not be your problem but, I guess, deserves a verification.

HTH,
Alejandro.

2011/9/16 Maxi <maximiliano.duarte@gmail.com>
install the plugin, but keeps asking to install it.
2 days ago if it worked

--
No a la obsolecencia programada:
http://dimensionargentina.blogspot.com/2011/01/todo-esta-disenado-para-romperse.html

Linux User #495070
http://miexperiencialinux.blogspot.com/

El que pregunta aprende, y el que contesta aprende a responder.