We have been having problems with out network. Our servers, Switches, Routers, and workstations randomly loose their connections for a short time then will come back up. For example we run a constant ping all day and we will get replies for say 10 minutes, then maybe 10 request time outs, then lots of replies, then maybe 5 time outs. We have replaced all our switches, and our router and it is still happening. So we think it must be a NIC somewhere causing the problem. So my question is do you guys know of any tools that let you run diagnostics on NICs over a network connection? We have about 100 computers so to find out exactly which one is causing the problem will be very very hard without the help of some diagnostic software... Any suggestions would be great, we are getting mobbed in the lunch room! hahah