Hijacked domain?

[Ghoulish Delight]

I'm helping someone set up a website. They've purchased a hosting plan (Powweb), they have their domain (registered through 1and1) and they've set the DNS at 1and1 to point to powweb's DNS as of a couple days ago.

But at the moment, entering the domain (which she registered back in June and was previously unregistered) takes to you to a "this domain is parked" page...at an entirely different web host (iPower).

She's called all 3 companies and has been informed that her domain must have been "hijacked" and she needs to fax her info to one of the companies (not sure which, but I'm guessing iPower) to prove ownership.

Anyone heard of this?

Incidentally, she actually has another domain that IS hosted at iPower. But this new domain was never associated with iPower.