OK I've got a question that's been driving me crazy. I've got two computers, both with 10/100 Intel integrated network cards and using the SAME network cable plugged directly into my router, one always gets about something like this:

then the next one gets this:

Now if you're anything like me you're probably wondering the difference between these. The first is a Linux machine (Ubuntu feisty fawn to be precise) and the second is a Windows XP (Media Center) PC. I already know what you're thinking, and I've ran 3 AVs and 4 anti-spywares on the Win machine and strangest bit to me would be that when I switch over to wireless on the Windows machine its speeds go back up:
But yet, my actual network speeds (did my own test involving transferring a 100MB file across my network) are fairly identical on both of these computers. Am I missing something or has anyone else noticed this effect?