It's clear to me that work resources should not be used at all when starting a new company. (Or, for that matter, for anything that isn't work related.)
However, dealing with multiple machines can be somewhat of a headache. What would the law say about using a work laptop, when at home, to remote desktop into a personal machine?
I imagine that most people here will advise against this. But where does the line get drawn? Am I allowed to access my personal Gmail account from my work machine, or would accessing my Gmail account from my work machine render every email in that account (including those pertaining to a new company) as work property?
I'd love to better understand the extend to which complete and total separation is necessary: including separate accounts of all sorts (email/Dropbox/Evernote/etc.) and never opening the wrong account on the wrong machine.