Problems navigating on website?

I've registered for a site called textbroker, which is a freelance writing site. Once I log in and try to navigate through the website, it brings me right back to the homepage. So I can't view any articles, the forum, or my profile. Everything I click takes me to the homepage. But when I tried it on my friend's computer, it worked perfectly fine. I could navigate the site perfectly, which makes me think it must be my computer messing it up somehow. I tried different browsers, emptied my temp files and cookies. Any ideas on how to fix this problem? I have a Toshiba laptop with Windows 7 Starter Edition.