More specifics:
Current Uptime: 24: 54: 07 (and counting)
Battery level: 81%
Usage within this uptime: 3-4 hours of reading books (Jane Eyre still), 40 minutes of reading Currents (news feeds), watched three anime episodes (roughly 20 minutes each - 1080p // 1 hour), random spurts of playing games, and took a few photos to test how the camera looked (looks good, just not a fan of holding a tablet up to take a photo, of course).
Charging habits: I tend to charge while I'm sleeping (1-2 hours a night). I'm keeping up with this time table as I charged last night between 7:30PM to 8:49PM.
Pre-synced?: Yes. However, as I unlocked/rooted - I had to re-sync.
Location Services?: As davrow stated that he's not been having issues with it, I've turned it back on since my last post. No lock-ups, yet.
When it isn't in use, it's sleeping. I only rebooted the Nexus 10 last night due to a Friendcaster error that I was hoping to resolve by a reboot. Sadly, it didn't fix it - but it seems to be a common issue with that, specific, app. Regardless, I do hope you can resolve the issue with yours - it's a brilliant device and I'm sure you'll fall in love with it (if you haven't already). 3: