I'm not sure exactly when this problem was introduced, but I'm pretty sure it didn't exist in the 2.2.x kernels. It does exist in the 2.4.0-test12, 2.4.0, and 2.4.1 kernels. Any high bandwidth sustained inward transfer seems to hang up the card after a little while (< 1 minute with ftp, longer with nfs). Once the card hangs, the syslog has entries: NETDEV WATCHDOG: eth0: transmit timed out cancelling the inward ftp and restarting the network unwedges the problem. Here is what's in my /proc/pci for the nic: Bus 0, device 12, function 0: Ethernet controller: Lite-On Communications Inc LNE100TX (rev 32). IRQ 11. There seems to have been some relevant LKML traffic on the topic, but I couldn't decipher it in terms of what it means to me. I'm not subscribed to lkml, so please cc me in replies. Thanks in advance for any help. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/