Behaving badly around other electonics?

Has anyone experienced weird restarts or battery drainage with their Ativ S around
other electronics?

I've encountered RAPID battery drain one time when my Ativ S was placed on a sleeping
Nexus 7 tablet. And the last two days I've experienced handset resets after, not realizing it
the second time, placing my phone down on top or sleeping Macbooks.

All I can think of it the NFC or the Bluetooth causing some of this. But both are turned off on
my phone and I don't think Macbooks have any NFC capability.

Maybe something to do with the screens, or other batteries?

Anyone have thoughts?