4.0.6 direct download link

[Nolixz]

4.0.3 -> 4.0.6
http://cdn-files1.gamepron.com/file/...USMX_Patch.zip

This is the US version, but i think it works for EU too (it did for three years ago).
The reason im posting this is because alot of people are having problems with launcher downloading/installing.

[Kuri]

http://www.wowwiki.com/Patch_mirrors