> Go to system then to administration then click on system monitor look for the
program in the list to want to stop highlight it and click the the kill process
button at the bottom of the box that should do it after that click out and go
back and try your app again if it does it again just follow the steps i just
gave you.and welcome to Ubuntu friend.
>
Before 9.04 'cntl +alt +backspace' was the way to effectively kill all and the
has been changed to 'AltG +k +sysRq' (if my memory serves me right.) I will try
it after this mail! The original report about this shows how to revert back to
CNTL +ALT +Backspace if you prefere it.