Is this sleep light behavior normal w/ a MacBook Pro?

This is the deal. I just purchased a new MacBook Pro 2.4GHz Intel core 2 Duo and I've noticed that the 'sleep light' comes on and stays on when I have my Cinema Display plugged in with the laptop cover closed down (so, therefore, I'm using just the external monitor, not the MBP's screen). It isn't 'sleeping' (it's not pulsing in and out as it does when it goes to sleep), but the light comes on steady whenever I close the lid regardless that the MBP is completely awake and being used with an external monitor.
I also noticed that while I was in the process of migrating data from my powerbook to the MBP, when the screen went dark (non-activity) over time, though the computer was transferring data via firewire, that when the MBP screen did go dark the sleep light immediately turned on. When I moved the mouse or touched a key of course the screen came back and then the sleep light went out. I was very surprised with this. IS THIS NORMAL FOR A [brand new] MACBOOK PRO? Did apple change things from how the PowerBooks were set up?
With my powerbook, the sleep light only comes on when it's ACTUALLY SLEEPING and then it pulses. It doesn't come on steady when the lid is closed. So this is quite different from what I'm used to and want to know what is supposed to be happening with the MBP.
The MBP goes to sleep properly in the various situations I've put it in. So far it functions properly. Except for this sleep light issue. And after doing some reading here I found there to be a number of issues with the MBP's 'sleep' and/or power management systems. And I'd like to know from other MBP users - Is this steady sleep light normal when the laptop screen is 'not in use' tho the computer is still ON and working?
Anyone notice any of these things as well? Your timely responses are much appreciated. I decided to ask here first, as I often find other users as knowledgeable and helpful as any resource out there. Thanks in advance.
BTW, and this is a side note: But I didn't install the battery update (I think it's 1.3?) for my MBP because of the scores of issues I've read about it thus far. Your thoughts on installing the update are also appreciated, if you have any.
Regards, Elizabeth

You have a macbook pro too (as noted), does this happen with yours? If apple changed things and it's normal, like as you stated that it was lite so you'd know you're computer is 'on' but I'd like to know for sure if that's what it's supposed to be doing. (nip it in the bud if there's a problem)
I know it isn't sleeping (not pulsing) but since the light is on (steady), it is something I noticed right away. For example, right now as I type this, with the MBP on my desk w/ the cinema display plugged in (w/ a keyboard) and the lid is closed on the MBP, the light is ON right now. Not pulsing, but a steady light. Doesn't seem like it should be, to me. (at least in my view)
Thanks for your reply Josh.

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