corrupted download

[Matthew A Coulliette]

Hi again,

I have been having trouble downloading from 1 of my computers.  I use it
for downloading and burning distro's.  I was recently downloading an
ubuntu iso and every time the file was corrupted.  I tried the firefox
download and when that did not work I tried wget from the command line. 
I also tried 3 different mirrors; still the file was corrupted.  Is
there a program that will tell me what is causing the download to get
corrupted?  Do I have a bad NIC someplace?

MatthewMPP