We are running port-security on a 3750-48PS-S switch running C3750-ipbasek9-mz.122-25.SEE IOS and we are experiencing a strange problem. We have a data vlan and a voice vlan configured on each port, we then run port-security sticky on each port with a maximum of 2 mac-addresses. PC's are connected behind Cisco IP-Phones. This is our standard config and normally we have no problem. On this switch though as soon as we turn on port security all of the PC's are black-holed. You cant ping them, rdp to them, and from the user perspective they have no network access. The ip-phones work fine and we show the mac address from the phone and the pc as securesticky addresses. The switch never shows the ports down due to a port-security violation. As soon as I disable port-security the pc's are restored to traffic. I've included a sample of our port configs.