alanback: Odd indeed.As well as not being a mathematician I'm also not a psychologist.But this has got me wondering.This stalling is obviously being done on purpose so I'm thinking that perhaps there's some minute sense of power being derived from these tactics? To most of us this is a place to play games,nothing more,nothing less.But to a lesser mind, it may be all they have in life that gives them any sense of self importance.As i said i'm, no psychologist so don't really know how a human mind works and thinks.But surely this behaviour is more to be pitied than scolded.