bears/potato — Issue #11: Default user lock 0 is treated as null.
Author: iceberg-young
Created: 2011-11-26 05:28:56+00:00
State: open
Labels: BUG

When open the page at the first time, there isn't a cache for user data.
So server will gets a `null` as lock value, which *equals* to zero, and blocks returning data.