Adobe Creative Suite CS5 - One License Multiple Macs

Adobe's answer will be:

Q: Can I distribute a Creative Suite 5.5 edition across multiple users or computers?

A:The software license agreement accompanying your product may entitle you to install and activate the software on two systems with certain restrictions. The product license agreement for suite editions does not allow you to install the individual components of a single suite edition across multiple computers. Read the software license agreement for more information. Subscription editions follow the same license agreement terms.

With that in mind you will need two licenses for the products you use, you may not need the entire creative suite on each computer and find it cheaper to purchase licenses for individual apps.

If you buy apps from the Apple App Store you can install those apps on any computer that you use the same Apple ID with. Adobe has yet to move their apps to the App Store, but I suspect they will at some point.

You can activate CS on 2 different computers. You can however install it on more than 2 computers and (de)activate on an as-needed basis, given that only 2 installations are activated at any given time. To deactivate, go to the Help menu of one of the CS applications.