Alright the title might be a bit deceiving as it suggests a rather big problem. It's not. It's still a glitch/problem though. If you switch certain apps though the task manager bar, sometimes the iphone will end up giving a metallic echoey sound instead of the regular typing "click" we hear as we are typing on the phone. It starts once you use certains apps and the way to fix it is to restart the phone. It doesn't affect the voice calling or the speaker when making calls. Only the sound associated with typing on the iphone. So far I'm guessing its connected with "multitasking" certain types of apps. I can replicate it every time and was wondering if you guys have the same issue. Steps to check for this glitch: 1. Start the Pandora app and start listing to some music on the iPhone external speaker. 2. Go back to home and start the Shazam App and click the "Tag Now" button on the top. 3. The Pandora App should stop playing the music so that the Shazam app can listen...though since there is no music playing it will just tell you it can't find the song. 4. Go and open any App in which you can input text and start typing. 5. You should now see that the typing "clicking" sound has changed to a weird robot spacey sounding sound (best way I could describe it). 6. To fix this and get back your original typing sound simply restart the iPhone. : 7. Sit there and wonder if there is something wrong with your phone and whether you should return it. So there you have it guys another minuscule issue. I know someone is going to lecture me about nitpicking and I agree to a certain extent. But I feel like when you spend you hard earned money on something especially from Apple you expect a certain guarantee of quality. So lets hear who else is having this issue and is able to replicate it on their shint new iPhone 4.