Hi all, This is a little more in the way of a systems question: I'm presently running a cluster with mpich2-1.0.6p1 installed in /usr/local. I want to upgrade to mpich2-1.0.8. Should I run the 1.0.6 Make uninstall first? Or just install 1.0.8 on top of 1.0.6? Or is there some other cleanup method I should use to eliminate 1.0.6 first? thanks! Gregg