I have to agree with Steve on this one. I've used Network Solutions exclusively since day one. I have invested years in my sites and the security they provide gives me peace of mind, knowing my domain won't get hijacked.

ICANN (the Internet Corporation for Assigned Names and Numbers) has changed the domain name transfer policy for all accredited domain name service providers. The prior policy allowed you to expressly approve a transfer request with your current domain name service provider before any transfer would occur. The new policy, however, eliminates this express approval safeguard, removing an additional protection against unauthorized transfer requests.

Network Solutions has a system in place to block those unauthorized transfer requests, and I for one think its an invaluable service.

I don't know if other registation services offer this protection, but I'd start looking into it if you are not sure.