Redhat enterprise Linux WS 3 trying to set up a IPP type printer..but cannot get through.. the error: Network host '###.###.###.##' is busy, will retry in 30 seconds.... INFO: connecting to ###.###.###.## on port 631... ###.###.###.## is my printer IP, the printe is HP LaserJet 4000N Anybody has idea what's problem is? Thanks!