Changing language shortcut
The default shortcut for changing language Hebrew-English (and vice-versa) in the CS labs is Shift-Shift. Many students asks how to switch it to more comfortable one.
The right way to do it is going to: System--> Control Centre and choose Keyboard (under hardware)
now choose the "Layouts" tab and go to Options. Then, open the "key(s) to change layout" and mark your favorite option (almost surely It alt-Shift).