For those who are in Los Angeles datacenter, there will be router maintenance for firmware code revision and expected to last for 10 minutes. You may verify your website location by pinging your domain name and if it's started with ip 67.xx.xx.xx, that means you are in Los Angeles datacenter.
We should not expect a prolong situation and there is no server reboot.
Below is the timeline:
Date: December 11th, 2013
Start Time: 3:59PM Singapore Time
End Time: 4:09PM Singapore Time