Version 6 of Adobe loads much slower than version 5. The speed problem was fixed with 7. But if you need version 6 you need to pull a couple tricks on Adobe6.

• turn off the splash screen
1. In the Edit menu, navigate
edit » Prefs »  Startup » application startup: » 
2. unclick "use splash screen"
• force plugins to load later
1. navigate to C:\Program Files\Adobe\Acrobat 6.0\Reader
2. Create a new folder called Optional if it doesn't already exist.
3. Move all files from the plug_ins folder to the Optional folder.

NOTE:If you get an error "FILE OPEN INITIALIZATION FAILURE" then disable all uncertified plugins

1. In the Edit menu, navigate to Edit » Prefs » Startup »application startup:
2. click "use only certified plugins"