Hi, I am trying to learn shape keys, actions and NLA using the same mesh in tutorial (http://mediawiki.blender.org/index.php/Manual/PartIX/Driven_Shape_Keys), but with out the IPO drivers. I defined LeftUp,LeftDown,RightUp and RightDown shape keys. I am trying to define corresponding actions LeftUpAc which has just one IPO corresponding to LeftUp key etc and compose all these actions in NLA to get desired effect.
The trouble I am having is I see all 4 actions in action editor have exactly same IPOs. Whenever I change any IPO of a shape key in one action it effects all other actions. I want to have each action with seperate deformations for the shape keys and then compose them in NLA. I am trying hard for last 2 days and could not figure out anything and I tried posting in General Questions but no help. Can any one help pleeeeeeeaaaaaaassssee 
Well, the Ipo drivers were used with a reason…
Oh! Thanks… I got what I want using the drivers. Thanks a lot 