Redirect loop

I cant seem to access the techrepublic.com main site. I get the:

“Redirect Loop Firefox has detected that the server is redirecting the request for this address in a way that will never complete.”

Thw site works perfectly when i access it at home via ethernet cable. However when i use the wireless network at work i get the following error.
Im using a lenovo w500 laptop.

wireless network is using proxy.

any ideas?