If you're still having problems with this site...or any others, then try this fix which I have posted before and often works (XP & Vispa).
I couldn't get into Paypal and this was the answer.
Go to Windows\system32\drivers\etc (yes etc is a folder) and use Notepad to open up the file "hosts", you should find very little. I found a whole list of Paypal URLs whcih should not have been there. I deleted them, saved the file and all was well. How they got in there and why is a mystery...but it did work. All that is there now is 127.0.0.1 localhost which is all there should be.