I'm a sloppy typist. I don't know if I hit some key combo or what but I was typing a letter in word pad and suddenly my typing is in all caps. I have used a reg file to disable my caps lock key on this laptop because it gets in my way - a long time ago. I know it cannot be the caps lock key. I do not have a shift key sticking.
I saved the letter, then copied it to Polyedit another word processor, and it still types in all caps. Firefox does not seem to be effected. I even tried rebooting and nothing helped.