Should I be worried?

[T Molnar]

Should I be worried?

I was playing an online game on my tibook.  the game lagged the screen 
went black.
(power?)
I restarted using cntrl/apple/delete.

I was using the plug in but took it out as I was restarting, thinking i 
would let it start up on battery, because i was going to pack it all up 
to go home anyway.

It took a long time to restart, when it did it was a sleep and wouldn't 
wake up.
I took the battery out.
It stayed asleep.
I put the battery in it stayed asleep.

I decided to  plug it back in.
that woke it up.

The battery was now at Zero 0 % charge.

It's now charging.

This little scenario concerned me given reports of battery problems on 
15" tibooks.

( I got mine Feb this year).

Freak happening? or something I should look into further?

any comments are welcome...
thanks
tim