Please try rebooting and I'd also recommend that you verify that you are on the latest version of Chrome, 21.0.1180.83 m. Please let me know if you continue to hang.
I search the "Flash Player addons Stops respondinge " and find this. I just have the same problem when I open some site like http://youtube.com http://buybattery.co.nz for a while (about 30 minutes) when I click the new link in these site , Flash Player addons Stops respondinge happends. So I should change to firefox sometime. wtf maybe the chrome add-ons is not perfect as ff.