Hi Warren,
That message shows absolutely nothing wrong with BitDefender. I'm using BitDefender v10 and I also get that message once in a while.
Basically, this is what is happening:
- BitDefender is running fine (while your PC/Windows is turned on)
- you click
Shut Down to close your PC
- Windows sends the closing message to all applications
- bdagent gets that message and starts the procedure to close. But it just needs a little time to assure that all BD components close successfully.
- practically, Windows doesn't like that bdagent waits a little and shows you that message to ask you if you want to force bdagent to close.
- in "a second or two", bdagent finishes whatever it is doing and, finally, closes and the message disappears
- Windows continues the shut-down process and turns off your PC
As you can see, there's absolutely nothing to worry about and it's just the way it is.
On the other hand, if that message doesn't disappear at all (bdagent hangs on shut-down), then you have a problem and you have to report it. Otherwise, you're safe

Cris.