This REALLY pisses me off too. It makes hands-free/voice actions worthless.
Here's an example:
I'm in the car and decide I want to use navigation. I use either my Bluetooth headset or long-press the search button to bring up my Voice Actions. Now if one of the 4 or 5 apps that can use the long-press search button have been updated I then have to select that I want to use my voice actions app and check the remember box. Ok, so that's done. Now I long-press again, voice actions launches and I say "Drive to .........someplace". Normally this will automatically launch my Google navigation, but if either Google nav or telenav has updated then I get another prompt. It makes for a very "hands on" "hands free" experience, not what I want while I'm driving.
Yes, I could block all auto-updates but it's stupid that this is the only option. Even then after performing updates I would have to go through all of these various actions to set my preferences so they're ready to go when I actually want to use them.
I guess I could just not install any apps so that there is only one choice for most things, but again that's a ridiculous workaround for what should be a straight forward process. If I say "remember this setting" then I want the phone to just f'ing do it!