At seemingly random times (I haven't noticed any rhyme or reason to it) an error will appear that says a network cable is unplugged and the internet will go out. If I leave it alone it will come back online in a few minutes. I have checked about twenty times that the cables are definitely not unplugged. If I wiggle the ethernet cord around where it hooks into my computer it will start acquiring a network address again and will be fine sometimes for a day or other times for five minutes.
I've tried a different NIC and three different cables with no change. I've tried setting the duplex to 100mbs full and that didn't help. I've also had the internet provider come out and they gave me a new modem though they said they couldn't find anything wrong with my original. I'm kinda running out of ideas and this is driving me insane. Any help would be greatly appreciated.