[Dune] MPI error of PAAMG test on ubuntu 11.10

[Patrick Leidenberger]

Hi Markus,

> I don't use Ubuntu. But on Debian wheezy (testing) it works with g++
> 4.6.1 and openmpi 1.4.3

Thanks, then it seems to be a special Ubuntu 11.10 bug. and not a g++ 
4.6.1 Problem.
Because that is not my only problem with with 11.10 I go back to ubuntu 
11.04, where everything was fine.

Have a nice day,

Patrick