Motorola Atrix 4G :: After Recent Update, It Thinks It's Always Charging

I have an Atrix 4G, I am running Android version 2.3.6 and the build number is 4.5.141 I completed the recent update last night and everything seems fine except...I charged the phone overnight and when I unplugged it this morning, the phone continued to indicate that it is charging. There's a little Harry-Potter-lighting-bolt on the battery symbol in the top right corner, and the battery symbol is constantly going through the animation of "filling up" as it does when it's charging.Also, when the screen times-out and I press the power button on the back, I see the message "charging (80%)." (Needless to say, my phone isnot plugged in.) The percentage of the charge slowly decreases over the course of the day, as it would normally.I guess this problem isn't affecting my ability to use the phone, but it's odd and alarming to see something as basic as this fail to work properly after the update.