terrain.mpq

I am installing World of Warcraft, and theres something messed up with my installation. The installer has been on the file "terrain.mpq" for a long time now. I think it's stuck, and I read about this issue one time. I can't find a solution. Anyone know of anything to do?

How long does it stay on that for you? I know when I install it takes a long time for it to get pass that point, but after that the installation is quick.

I'd say maybe 20 minutes. I'm not entirely sure though, may have been less.