I think you are lying or you think user selection screen is considered fully booted.
it's pretty much why everyone hates it. I can handle the bad mouse and keyboard controls, but the fullscreen on "windows" is what's so annoying. the only time I use metro is when I search and I don't like it at all.
I used to use the start menu to check on what files I've used in the past with certain programs, now I can't do that anymore and it helped a lot while I was working.
This just makes me even less likely to buy windows 8 , I'm not having it forced down my throat.
Dont worry folks because OpenGL DOES now work faster. Nvidia working with Steam are bringing PC gaming mainstream on Linux and it IS the future.