Whenever I type the name of an application to open it, the application opens, but after opening it, the terminal seems to be busy with a process so that it doesn't give me the prompt for the next command (I mean following the $ sign). Then I can't type any more command in the terminal and I have to exit it pressing the close button (at the top left) which in turn kills the process. Please note that I am using precise pangolin & this problem seems to be pertaining to all the processes.
Try adding a
& after the name of the app, e.g.: