This really is getting out of hand Microsoft - this stupidity that Secure Boot is - it isn't solving any real problem for the user. It is only creating nuisance.
That's the whole purpose of it - creating enough nuisance so that average Joe can't get out of Windows ecosystem. Each OEM will implement the disabling option in their own obscure way, and some of them will even fail to work properly. I remember when I needed one boot pendrive for each of my computers.
And what makes you think they give two shits about what users want? Anyone who has been paying any attention at all to the computer industry for the last three decades would have learned by now that Microsoft doesn't serve "users"; they have always been the "safe" choice for "business" ("no one ever got fired for choosing Microsoft!"), and recently they have become dogs in the laps of the crony capitalist cartels of the entertainment industry. Microsoft has always been about anti-competition and locking the user to their platform; this recent offensive of "secure boot" just gives a bonus of the DRM that the entertainment racketeers so badly want.
Still though this whole thing is nonsensical - wonder if they were waiting for the antitrust era oversight to end (May 2011) before trying this schtick.