Well I took my iPhone 4 to the Genius Bar at the Apple Store today.

You can go and read all the gory details if you want, but in summary: my iPhone appears to be typical, a Bumper solves the issue, no free Bumper offered, customer left angry and frustrated.

I'm sure everyone is through bored with me going on about this, so I shall try and shut up about it and wait to see what the software update brings. And no doubt next time I'm in an Apple store I'll probably cave in and buy a Bumper frown
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Remind me to change my signature to something more interesting someday