user.save and profile?

Hello all, this is my first post.

I'm working this the various services and Flex. I can get profile specific info with user.get, but I'm getting an access denied error when I try to save an update to that infomation.

Before I dig to far with this, is the user service supposed to be able to save profile information or would that require a custom module? I've edited the permissions quite a bit and I can't see anything obvious that I haven't already granted.

Just looking for a sanity check.

Thanks,
Derek