I have a switch stack of 4 5500-ei with one being a 5500-ei-pwr. We have ip interfaces assigned to 2 vlans on the switch and are doing dhcp relaying. On what appears to be random ports dhcp seems to be slow to respond. I am running the latest firmware (3.03.02ep10s168). At this point I have replaced all the hardware, reset the stack and rebuilt from scratch but the problem remains. Even as I am typing this I don't really believe that this is a switch problem but the one thing I have isolated it to is a port on the switch. Even if I put my fluke link runner on it is takes around 37 seconds to acquire an address. Put it on the next port over and it takes around 3 seconds. So I have tried different hardware on the changed all the patch cords and even plugged the computer directly into the switch. Any ideas would be great!