You probably did a power cycle on the rig! Do a warm reboot via SSH and that should clear your avg figures ....
Well I've SSH'd in and rebooted. I'll give it an hour. Otherwise back to October firmware, it was working really well for me. Does the December firmware cross platforms with the S3+?
Your avg numbers should be good now ...... Its something I noticed a while back whenever I did a power cycle, but when the system cleanly reboots the numbers are OK. That is a remnant of the initial Oct firmware bugs, and to be honest I'd rather they did not try and fix it as we've seen what they are capable of in terms of fixing minor bugs in their firmware!