strange network slowdown issue
For over a month I've been noticing a slowdown in my network connectivity. I've been using an old P3 box as a router/server for about a year and a half. I use a second NIC and a crossover cable to give my main desktop net access. When browsing images on my file serve I noticed they were taking a while to load, almost as if I was browsing them from an outside website. I discovered that unplugging and plugging in the ethernet cable solved the issue for anywhere between 3-9 hours. I thought maybe the cable was fried so I bought a new one but the problem persisted. I thought maybe the NIC was bad so I replaced it, no dice. I changed the PCI slot it was in, nothing. I upgraded the kernel, nothing. The only thing that fixes it is unplugging and replugging in the cable. I noticed about a 30% cpu load during large transfers between the two computers and I thought that was awfully high. I'm out of ideas here, any help would be much appreciated.