I installed GoLauncher the other day (and I love it!), but my battery has absolutely tanked. It's the only change I can think of that could be causing it. I've coincidentally at the same time started to get 'android.process.acore is hogging data' notifications. I used to run all day and only use maybe 30% throughout the day and now I'm now using more than 70% by dinner time. I"m still troubleshooting but that's the app I'm looking at.
I'll be curious to hear feedback from others.
Jacqui