Turning off auto-complete

[WeaselWeaz]

How can I turn off auto-complete? I unchecked the boxes under the keyboard options but after installing and setting up .NET 3.5 in the registry it won't turn off. It makes typing a word impossible, like in VZApps where every letter I type inserts whatever auto-complete was working on while continuing to type a word. Typing "Facebook" is a 20 character jumble of text. I've had this less than 24 hours and like it but this, even more so than some poor battery performance, is a dealbreaker.