I think the crontab question is fine. As Kara says, everyone is new to something. I'm a somewhat experienced Linux admin, but if I suddenly had to admin a Windows box I'd be on ServerFault asking some pretty basic questions (once I'd tried google of course).
Maybe we should use the beginner tagbeginner tag a lot more aggressively (ie add that tag to lots of basic questions) and then those who aren't interested can ignore that tag. Defining the scope of the beginner tag would be an interesting exercise of course ... Or maybe there should be a new tag like "basic" or something.
Overall I would be sad to see beginner questions go. I started getting involved in sys admin as a volunteer helping other projects, and Server Fault would have been a wonderful resource at that time, and the things I was doing don't really seem a good fit with my understanding of what Super User is for. Unless there is to a re-alignment of the purpose of Super User to cover basic Sys Admin I think the questions should stay.