ahha **** yeah that sucks then..
What are the symptoms exactly? When it happened to me, the bluetooth menu icon when I clicked it, would say "no bluetooth device found" even if 1 minute earlier I was transferring a file from my phone to my Mac through bluetooth - a transfer that failed. Sometimes a reboot would fix it but not for long...
Had to send it in at the Apple Store and have it replaced.
Patrix.