[U-Boot] Uboot-Mini2440 Not recognizing ARP replies

Hi I am using a Mini2440 Board and using Uboot-1.3.2 on it. I am connecting it to a my Host Machine which has Ubuntu 11.04 on it. After downloading the Uboot image on the board, through USB, I am able to boot up and set the environment variables like ipaddr,serverip, netmask and ethaddr, to

[U-Boot] uboot not responding to ping to ubuntu

Hi All, I am facing a very strange problem. I have a MINI2440 SBC which I am connecting to my laptop with Ubuntu11.04. I have downloaded the Uboot configured for mini2440 and its version is 1.3.2. I have successfully transferred the Uboot code on the SBC. But when I am trying to do a TFTP from