I've learned to trust in-house Apple apps and I love the iCloud integration, but quite frankly I've found the reminders app to be just about unusably slow. It's almost completely unresponsive and glitchy (when I set a location or time it will occasionally unset this entry by the time I return to the top-level of the app, etc.). I've seen some posts and articles about the app being oddly designed, but this isn't the problem I have with it... I like it but I can barely use it at all. Does anyone else have this problem on the iPhone 4?