Do you have 4 cables connected, or 2? If each server has a connection to each switch, make sure that the port channels are set as VLT peer links. Also, you may want to look at applying the 10.4 update to the switches.
Server 1 port channel to dell switch (2 physical link as a port channel)
Issue solved, root cause from VLT. 1 of the switch did not tag the vlan on the Po1000. Reboot and problem solve.