Stop signing me out of other devices

[updatemongrel]

Stop forcing a sign out on my other device when I switch computers!!!!  Macbook wakes from sleep occasionally and I get signed out on the computer I'm using.  I have to switch back and forth frequently and sign back in every single time.  Why allow my phone to be signed in simultaneously but not my desktop/laptop?  This is insane.  Please fix it.

[peterk1]

Combined with "validation" codes for sign in, this is quite infuriating indeed!