I have recently been getting this message when going to install or update apps from the app store on my iphone 4. Has anyone else seen this or know why it might be happening? It happens when the initial password window pops up to enter you password to allow install or updates. It seems to lag behind when typing in the password. Then the error appears stating it could not purchase a specific app (the same app everytime is mentioned, on my device it is mapquest 4 mobile by AOL) and 10 other ones as well. After hitting continue, it returns back to the password screen to continue entering your password. I wondered if they were updates for apps that were just not working correctly, but when I checked, all the apps are up to date on my device.