It may be because I use the 2.6.17.3-slh-up-1 version, but everything seems fine with me.
www.everymac.com looks fine to me. (I could be missing something)
-Crust
It will only fail if one of the routers higher up in the chain is broken and doesn't support scaling properly, this is something to fix - not in the linux kernel which conforms to accepted standards, but in affected systems.