No way to force-close (kill) an activity

[sascha_silbe]

If an activity has gotten into a state where it doesn't close itself anymore, there's no way for the user to do a clean shutdown (the only option left is forcibly powering off the machine).
Several other UIs are offering to forcibly close an application if it doesn't voluntarily close after a certain amount of time. Another option is offerring the option to kill the application in the regular menu (like e.g. ion3 does), but IMO the first option is better since it's harder to accidently shoot yourself in the foot.

[sascha_silbe]

Oh, just to be clear: While the issue of "no clean shutdown possible" can be solved by simply ignoring activities that refuse to close during shutdown IMO it should not be _necessary_ to do a shutdown just to kill a renegade activity.