Network usage during work hours has quite well defined policy (i.e. it can be only used to look-up job-related stuff, read/download job-related e-books, etc.) in a company where I work, but there's nothing said about after-work hours.
I often have to stay at workplace for some extra hours (waiting for code review, test results, etc.), which are not paid. Is it appropriate to use internet to get non-job-related information (for example, I want to get driving license and I'd like to prepare for exams) during this time or should I stay with the policy, defined for work hours? Maybe I'd better ask for clarification this case in policy?