The weird red LED

[koojo]

The other day I pulled my phone out of my pocket to make a call and noticed something strange. The LED in the top right corner, which usually blinks orange and is orange/green when charging...was now fully lit in red. With the phone on, the orange still blinks, but the red is on constantly. I tried putting in a different battery and same thing. I haven't changed any settings that would cause the phone to do that. I haven't noticed any other change in the way the phone works. This little red light is annoying and not necessary. It's on from the moment I turn the unit on, and even with the phone turned off, the light still glows. When charging, the led does turn orange/green however, but once I remove it from the charger, it goes back to red. What's going on?