NASLite Network Attached Storage

I'm having lots of trouble when I try to copy even medium-large files (200mb+) to or from NL. I'm on a gig network, and things will fly for the first little while (sometimes 30mb, sometimes 180mb) and then suddenly the transfer either stops completely or just slows to a crawl. This is happening whether I'm copying to or from the NL, and happens to/from both Windows and Mac machines. I've got a coupld of 1gb files I need to move to NL and I can't figure out a way to get them on there because the copy will fail every time. Smaller files don't have a problem.

In my syslog, I get hundreds of lines saying the following:
"Jan 12 20:15:44 user.warn kernel: eth0: Too much work at interrupt!"

Everything seems to indicate that NL is just getting overwhelmed by the traffic or something, but this shouldn't be the case with a single 200mb file being copied should it?

Anything I can try to do to debug?

For starters try moving the NIC to another PCI slot and see if that clears the problem.

Mike