Is it possible to click away those fancy notifications? Often I have to wait until those bubbles vanish and that's quite unproductive.
PS: Using currently 12.10
Short answer: no. By design you are unable to close them (with a click, at least).
But if that really annoys you I have read sometime ago an article on WebUpd8 showing how to install a patched NotifyOSD version and a configuration tool to make them clickable. Those packages are provided through a PPA, so the usual pitfalls on using them apply(1).
Those PPA's have packages to Quantal, so if using a PPA is ok to you give it a try. I personally have never used them, so I cannot tell how stable they are or not. If something goes wrong you can use
ppa-purge to revert the changes.
notify-osd is locked down because developers know best, right?
However you can still install
notification-daemon (which was replaced by
notify-osd) and after logging out and in again, you should see functional (albeit clunkier in design) notifications.