Any suggestions? I don't have silverlight installed.
Just viewed those sites in Firefox 10 on Ubuntu 11.10 and they display correctly. For Silverlight you can install Moonlight, it's the Linux equivalent. A webpage ending in ASPX has to be hosted on an IIS windows server, meaning you won't be able to save an ASPX page to file and do right-click>open with Firefox. That being said, I tried browsing those sites and following a few links, everything seemed to be fine. Make sure you run the latest software, I've found that a lot of bugs in Firefox 9 have been cleared out by using Firefox 10.