The computer in question is a client's PC that was just installed all but a week ago. It was a replacement for what I thought to be a bad NIC in the old computer. The cable line was tested all the way from the wall to the switch, and constant pings were set up by both host name and IP address, with no packet loss. However, every few minutes or so, the computer will drop connection with our remote support software, accuflow, Citrix ICA, etc. We have tried a number of solutions, including disabling firewall, disabling antivirus, updating the network driver and a few other minor things. We also checked the event viewer logs and found nothing out of the ordinary there. Nothing will work. I was wondering if anyone had any suggestions on where to go next.