Long single beep noise on startup.

When I started up my MacBook Pro after a software update (EFI and Thunderbolt software), it made a long single beep noise, then showed the Apple logo with a progress bar below it, then flashed the screen, and went to the regular startup with the Apple logo.
I have a MacBook Pro 17", that was purchased 2 months ago, and running Mac OS X 10.7.1 (Lion).
Is this long beep a problem? If yes, what could be the problem?
Thanks,
Satyarth.

No problem, your firmware was updated.
A long tone will be heard, then a gray screen with an Apple logo appears. There is a progress bar under the logo. As the progress bar moves, your firmware is being updated.
https://support.apple.com/kb/HT1557
If it occurs again, call the free Apple support number, you have 3 months from date of purchase for support, one year warranty and up to three years for both if you purchased AppleCare.
If you have a question about anything, please feel free to stop by again.
Thank you for visiting the user to user Apple Support Community.

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