Nahh I think it's just website being a bit stroppy with the browser. In IE there is also a compatability icon you can click near the right hand end of the address bar on some pages that makes things works. Have you also installed the software that you can on the computer, that way if you aren't on the interenet can still download the stuff to that software.
I also have the garmin app for iphone. Cannot remember if it's free or cost 69p but once you've uploaded them to the website they are also available on the app. So I give them names etc... on the website then can see the stats including splits on my iphone.
Steph