Interesting. When I go to the Flash website to uninstall again it detects my installed version of Flash, 11.9.900.152 and my OS, Windows 7 64bit but the browser window says I don't have a browser installed. Obviously I have a browser installed. Is this perhaps the issue?
I have also had a minor issue with my email which seems to have started around the same time. When I cursor over the Email button on my home page, I get a popup window saying "Oops, we can't seem to connect to your mail server." and yet when I click on it, it opens my email just fine.