simon.proctor++ ... that's pretty close to how we handle it. Sometimes we have pushes that would impact customers (database needs to go down because you cannot pre-live) so we also evaluate the impact to the end-user. If it's too much of an impact, we co-ordinate to do the push off hours (weekend or after biz hours). I'd say more than 90% of our pushes follow your rules and about 2-3 times a year I can expect to be working on a Saturday.