What is it telling you, that you have installed a new program?
If so, it will stop all by itself after a few days.
There are ways to disable the balloon pop ups, but if you do this, it disables ALL the balloon pop ups, and some of them could be important.
If you really want to know how to get rid of ALL of them, let me know what op system you are using, I may be able to help you.
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