New Ubuntu, new troubles! This time the glitch regards the Flash plugin: in my Ubuntu 10.04 64bit, clicking on buttons or other elements of flash applets doesn’t work.
The fix that I used is described here: http://helpforlinux.blogspot.com/2009/11/i-cannot-click-on-flash-in-ubuntu.html.
The solution is pretty simple, you just have to add the following line to the script /usr/lib/nspluginwrapper/i386/linux/npviewer right before the last line:
From now on, when you’ll restart any application that uses Flash your mouse clicks will work as usual!
The meaning of that environment variable is explained here: it seems like that GDK’s window hierarchy management doesn’t play well with Flash…