Does this mean my power adapter is dead?

Last night, out of nowhere, suddenly it seems like my power adapter has died. But I'm not totally sure. I have read about the unreliability of these adapters and the complaints about them in the Apple Store.
Before I rush to buy a new one, can anyone tell me if it's really dead?
When I plug it in, the computer recognizes it. The menu bar says "Calculating" as if it is trying to figure out how much time it will take to charge my battery. But that's all it says. The battery percentage has been draining. (I am going to move important things to a different computer in a few minutes.) Neither the green light nor the orange light on the plug is lit.
I tried everything I could think of including a PMU reset, adding the "extension cord" thing (instead of using the plug that has movable prongs), and switching to a different power outlet. I can't think of anything that would have killed my adapter.
So is this thing really broken or is it something with my computer? I have the 45W charger. I need help fast before I don't have any power left to do any troubleshooting. It looks like I might have to get a new charger, rush delivery! Please help if you can, thanks.
Here is what system profiler says:
Battery Information:
Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 4101
Remaining Capacity (mAh): 3247
Amperage (mA): 0
Voltage (mV): 16070
Cycle Count: 122
AC adapter cannot charge battery: Yes
AC Charger Information:
AC Charger (Watts): 0
Connected: Yes
Charging: No
Kate

WHEW... It WAS my computer, and a very minor problem.
I had a local Mac guru bring another power adapter over to my house and it worked. However, it became intermittent when wiggling the plug. So I plugged my charger back in and discovered that it works when I push down lightly on it. I had tried twisting it before and pushing a little, but not quite the same way.
The problem then is with the computer itself... the connection is just a tiny bit loose. The computer has been carried around in a protective backpack and moved around a lot for a few years so it doesn't surprise me, plus I did pull on the cord sideways once.
I'll have to see about getting the computer opened up to fix the connection. But for now, whoo hoo... I have charge!!! Thanks.

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