Charging Issues

[gemst10]

Curious if anyone else has encountered this. My N4 is having strange intermittent issues regarding charging. I first noticed it a couple nights last week when I plugged my phone into the supplied charger, I would wake up the next morning and find that the battery was at the same level as when I plugged it in the night before. But it recognized it was on the charger because the lightning bolt icon was showing and it said "charging" on the lock screen. Then last night when I plugged it in the screen kept coming on and off and it wasn't charging. I unplugged it and plugged it back in and it seemed to be working fine. I woke up this morning and it was fully charged, but when I unplugged the charger it still said "charging" on the lock screen and showed the lightning bolt battery icon, but the battery was draining seemingly faster than usual. I briefly plugged it into another charger and unplugged it which seemed to reset things and it showed that the charger was disconnected. I hoped the 4.2.2 update would fix the problem but it's still happening. I've read some things about bad USB ports on the Galaxy Nexus causing similar issues. Thoughts?