My Linux distro is Fedora.
I am currently running 8 on my main machine which, now that 10 is out, is coming to end of supported life.
I've been running FC9 on my experimental machine (laptop) for a while and quite happy with the stability, so have decided that the main machine can be moved to FC9. FC10 is still a bit young yet to go on my main machine!
So I get hold of the handy preUpgrade GUI thingy that should allow me to select a Fedora version and auto magically install a new version. Unfortunately it seems that tool only gives the option to move to the newest and shiniest version (10) not any version you want.
So back to the drawing board and find another way to upgrade while specifying I want FC9 not 10.