adobe air do i need it

I'm trying to clean it up, and I discovered several Adobe programs: Acrobat, Air, Shockwave Player, and Flash Player. Do I need them all, or can.
My PC has a pop up advising me to update Adobe AIR. I am wondering what it is for, if I need it for Photoshop CS5 or Adobe reader or Adobe  How do I get Adobe Servers to quit telling me I need.
Last night firefox updated itself on my laptop and when the installation process had finished there was a huge pop up warning which said I had.
adobe air do i need it This is not recommended for shared computers. This tool uses JavaScript and much of it will not work correctly without it enabled. Will deleting it affect system stability and security as Firefox said or not? We have responded to the changing market by providing AIR support for a growing number of platforms, including Android, iOS and BlackBerry Tablet OS, televisions, and set top boxes. Since AIR applications are persistent — installed on a user's machine — AIR has a security model that is more like desktop applications.