Apple releases iOS 4.01 for iPhone 4 and iOS 3.2.1 for iPad. Highly recommend performing these updates.
iOS 4.0.1 improves the accuracy of the bars show on signal strength.
iOS 3.2.1 fixes a WiFi issue that many iPad users were experiencing (including me) and it works now.
Looking to record radio streams of shows like this?
Replay A/V (formerly Replay Radio).
http://www.applian.com/