* shrug * it's been working flawlessly for me everywhere I've used it, and it makes the sign-up process easier. The one complaint (and it's a big one) is that it makes it very hard to have multiple OpenID accounts on a site. You have to log out of your "current" one, and into the one you want.

I can see no reason this can't be changed with a plugin, but it's still a PITA.