I dont know if this is normal or what, but..

I just reformatted and went to download iTunes, I clicked download, then got this warning when using Google Chrome:

"Connection":
"However, this page includes other resources which are not secure. These resources can be viewed by others while in transit, and can be modified by an a attacker to change the look or behavior of the page"

Print screen: http://yourimg.in/i/qizewyhb.png

Then in Firefox, you pretty much get the same warning (Click download, then look down in the right-hand corner and click on the padlock with the red circle on it and read the info)..

And Im sure its the correct site:
http://www.apple.com/itunes/