I've seen this happen several times since joining the private beta.
When I joined, Gaming pulled my profile from either Area 51 or Meta.SO, and thus had the name, "Dr. Gonzo." Both Gaming and meta.gaming used this name.
Now, I really only want that name on Meta.SO. On the other sites (aside from Area51, where I just didn't bother), I'm known by my birth name: "John Rudy."
No big deal, I just changed my name and profile on Gaming, and it was good. But meta.gaming, ever since, has occasionally switched between the profile associated with Gaming, and one of the profiles using "Dr. Gonzo." (I've noticed this also applies to the other profile fields, such as the "about me.") As I write this, it's using my Gaming profile. A short while ago, it was one of the Dr. Gonzo ones.