Even this takes ages to load, quick summary from article:

  Open the file brew.rb using the following command: vi /usr/local/Library/brew.rb
  Change the first line from: #!/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby -W0 to #!/System/Library/Frameworks/Ruby.framework/Versions/Current/usr/bin/ruby -W0
  Save and exit brew.rb