The Bluetooth connection on my iPad2 has also been a bit flaky at times with my Apple wireless keyboard.
The way I finally fixed it was to get the iPad to "forget" the keyboard, then pair it again.
Take the headset out of any possible Bluetooth range (as much more than 30 feet as you can manage), then tell the iPad to forget the headset.
Then do a real reboot of the iPad (hold the home and sleep buttons down together until you see the Apple logo).
Then bring the headset back and pair them up again.
This worked great for my problems. Give it a try.
I thought growing old would take longer.