I haven't figured out how to install it. When I tried to update the normal way by connecting to bnet, I got a "download failed" message, so I tried to download it from the website. I saw links to mirrored ftp sites the other day, but now they are gone.
This link:
http://us.blizzard.com/support/article.xml?articleId=21220
says "Currently downloadable 1.22 patches are not available as yet, previous patches can be downloaded from our FTP page."
So how do I install it?
Edit to add: More specificly, it asks me to "launch BNUpate manually," but I don't know how to do that. There is a file in my warcraft folder by that name, but I don't know what to do with it. If I double click it, it tries to open it in photoshop!