why now?

Somehow I have managed to change my internet settings or even worse delete them. Vesper has been worried that my computer has a trojan so I decided to update some things and install new programs. Unfortunately this has meant that I cannot load my departments homepage. I can load every other homepage in the faculty but not my own damn department (it loads in IE but not firefox, when it's normally fine). Now how useful is that? Especially so close to my exam.

*tears hair out*

EDIT: Webpage is now working. Even though I haven't done anything. Weird.