How passive IS passive investing?

[Brett G.]

For those that buy and hold for the income, how much time do you devote to your business?  I understand that starting out, depending on how fast you want to build your portfolio, you could spend a lot of time at it.

For those with established portfolios, how much time is required to maintain it?  Is this your full time 40 hour per week job?  How free are you to do other things in your life?

Thanks!