May be there have been some restrictions placed on your work comp network. But if you are able to log into other social networking sites, then that is really strange. What does it say when you try to log in ?
this is what i was thinking too, she might have been using this site more than working😆 and these ppl might have have block the site or something, hehe just kidding... hope ur problem get solve soon.
awww thats really bad, and i just hope the isn't blocked at ur computer wait a minute can u not try this on someone else computer and see if its opens or not, if it opens then it might have been blocked and if not then there is some problem at ur work computers btw what is this CAPCHE