Isn't this how all commercial software is? I mean, short of a critical security issue, you jusually have to wait for the next release of the software or at least a service pack. Are you hoping for 4191sp1?
Perhaps you have been usijng Linux too long and are used to downloading the latests Alan Cox kernel patch when things are not working quite right. You're just spoiled. :P
What *I* would like to see from nVidia is not faster driver updates, but a GPL release. I never really understood why drivers are so secret.