How to end an unresponsive app in Ubuntu

Here's a link to the different ways on how to kill an unresponsive program UBUNTU.

1. GUI way: Right-click on an open portion of either panel and click on "add to panel", double click on the "Force quit" app.

2. System--->Administration--->System Monitor

3. Full screen lock out ctrl + alt + f2
ps -e

then find the process' ID I needed to kill, then type in

kill [pid]


Origianally from here:
http://tinyurl.com/lxbbw3