Carcosa wrote:All very strange. Is it only the download sites or have you hit any problems on other sites?
Have you tried turning your firewall off long enough to try reloading the page? You said you looked into the settings but the real test is switching it off. On a sidenote: If you are only using the Windows firewall then I'd recommend installing [url=http://uk.pcmag.com/firewalls-products-1/feature/8525/the-best-free-firewalls]one of the good free ones out there which are superior - ZoneAlarm and Comodo are the frontrunners (just make sure you are installing the free version).
I am also wondering if it might be something to do with your router. I can't give specific advice, but it might be worth calling their helpline - when I had problems with a Belkin they were very helpful.
If that doesn't work, then I'll see if I can shake anything loose from the Internet to try.
My Windows Firewall is turned off. I did one more thing yesterday. Installed JDownloader and tried the link to the tusfiles. It grabbed the link but says 100% offline! No other sites have issues. I can open all other sites. It's only the tusfiles and uploading.net & ul.to sites that give me a blank window. Scanned with Malwarebytes. No issues.