For those of you under warranty, make an appointment at the Apple Store and take it in. Better yet, make an appointment for the genius bar online at
http://www.apple.com/retail/geniusbar/
Of course, if as some reported, it is a security issue, and Apple stores don't have secured networks, they nothing will show up.
For the rest of us, there are two ways to let Apple know there is a problem. The simple way is at:
http://www.apple.com/feedback/iphone.html
Select Feedback Type: Bug Report
Fill out the form. Just takes a minute
If you are a developer, registered to be a developer, or at least understand the lingo, you can report the bug at
https://bugreport.apple.com/
If it is happening to enough people and we start telling Apple, they may look into it. Or it may be a non issue by the end of this week with the release of 4.1.