Only use this tag when your question is truly specific to Gingerbread. For example, it's appropriate to use when asking about a Gingerbread feature, but not when asking about a device hardware issue unaffected by the OS (even you're using Gingerbread on that device!).
I have a Google Nexus S and for the past 2-3 days whenever I go to sleep the battery drains completely overnight. I mean when I go to bed the charge on my phone is plus 90% but for the past 2 days ...