I have 2 ACE appliances running in active/standby.  On each appliance I have port 3 used for FT and port 4 used for server traffic.  Every one of the connections terminates on a 3750 10/100 switch.  The switch ports (all configured as access ports) are configured the same way and each of the connections from port 4 (the server port) works great with no interface errors.  However, on BOTH ACE appliances, port 3, (the FT port) causes non-stop input errors and runts on the switch interface and failover will not work.  I have tried to hardset the speed/duplex on both devices and every other possible combination with no success.  AS A TEST ONLY --> When I plugged each of the FT interfaces into a $10 linksys hub, failover worked perfectly.

Since using the $10 hub is not an option, any ideas on what I can try to fix the issue?