I have this same problem. In both IE 7.0 and Firefox 5.0, when I try to do
something that requires Flash 9.0 ( graffitti in Facebook, streetview in Google
Maps, whatever) I am told I need to upgrade. I have upgraded many times now.
Each time, the installation is "successful" - I see the confirmation flash
movie (In IE) or the installer completes successfully (In firefox).

But then when I head back to the site, it still says I need flash 9.0, as
though nothing has changed. This is an identical problem on two browsers. I
have tried restarting a couple of times now, but it did nothing.

This is really damned annoying because I've installed flash just fine in the
past - ever since version 6. What could I be missing?