I have two packages that we use at home:
. My wife uses a Creative Suite Web Premium CS3 -- she bought it for $1,700 to use dreamweaver. She doesn't need any new feature in CS4, 5 or 6... no need to upgrade
. I owned photoshop CS2, upgraded to CS3, CS4, CS5 and CS6 (skipped 5.5)
Here is a situation: I am upgrading my computer, and giving her mine. What i did:
. Uninstall CS6 from my old computer
. Installed it on my new computer
Worked like a charm.
I moved my old computer to my wife's desk. Tried installing CS3... did not work. Called Adobe service: they will not allow me to deactivate the license on her old computer and move it to the new. Reason received: CS3 is too old , cannot move these licenses anymore.
Bottom line: the "perpetual license" that we all think we are getting right to, when we purchased a CS1-6 package, was smoke and mirror. The "activation" license, "meant to dissuade pirates", was actually a Trojan Horse to force users to upgrade, even if they don't need it.
Bottom line: my wife reverted back to using her old computer. When it will die, i will ask her to forget about using dreamweaver and learn another tool.
The same will happen soon with CS6 -- don't fool yourselves into thinking that this a license forever: the activation code means it is not. One day, when Adobe decides so, or when they go bankrupt, you cannot replace a hard drive, a graphic adaptor or a motherboard on your computer without rendering your CS6 useless.
One friendly advice: don't buy CS6 now, and don't dream about keeping your already purchased CS6 forever.