>Try just taking the cable out (of the library) and plugging it back in Just to make sure: Presuming that the library network card is rated for 100 Mbps, be sure to use a cable rated for that speed (which also implies a reasonable length). Excessive errors *might* cause a lesser network card to lock up, or a router/switch to consider the runt incommunicado.
It would be worth having your network people look at the problem, to gain some insight. If the problem points to the library network card, have the CE deal with the problem - buttressed by the info gathered by your network people. Richard Sims, BU