When you said about the 'bits of systems that they don't teach you any more', you are definitely on the same wavelength as me.

When I talked about linked lists, I remember the young programmer looking at me as though I was talking Chinese. When I talked about multi-dimensional arrays, he was convinced I was talking Chinese. When I talked about buckets, he decided I was talking gibberish............but I still had to sort his mess out.

Sometimes I think colleges teach about the latest xml,asp etc without any reference to the underpining stuff like computer structures. Referential integrity, anyone?