gdgt

This is a known issue with OS X Lion and it's new Bluetooth Stack and WiFi.

https:­/­/discussions.apple.com­/thread­/2730693­?start...

https:­/­/discussions.apple.com­/thread­/2664670­?start...

https:­/­/discussions.apple.com­/thread­/3505515­?start...

One fix I've heard of is to copy the Bluetooth stack out of Snow Leopard and replace Lion's Bluetooth stack with that. Hopefully apple will put out a fix.

I own the new MacBook Air 13" with the i7 Proc. I use a blue tooth radio every day. I switch it off and then shut down the Mac. The WiFi stays on and reconnects automatically every time. If I don't turn the Blue Tooth off before I put it to sleep when i wake it I never have problems with the WiFi but the Blue Tooth will not always re-pare with the mac. So I might be having a similar problem. My fix was to just stop the radio stream and change the audio back to internal speakers them sleep it. To turn it back on I first wake the Mac then turn on the Blue Tooth radio and it waits in auto-paring mode then I switch the Mac to the Blue Tooth device (an Altec In-Motion speaker). This works every time, ya it's a little bit of a pain but the Mac just doesn't seem to be abel to re-link to the Blue Tooth reliably from sleep and never from shut down. Wifi is never a problem, so this is my work around.