It is still doing it. Or, I should say, it's still not doing it. I just finished installing 7 x64 build 7100 and all of my usual applications as well as Office XP, and I haven't touched any services yet. Outlook still doesn't save my password. I am using all of the default Windows 7 settings just like I usually do with Windows XP when I'm at this point.
So I don't know: I guess this is just the way it has to be. But, of course, I still want to find a solution.