Last night my wife was in a textbox on a web page, trying to enter the captcha (?sp) word. It always made whatever she typed in upper case, which was very irritating. But only in that textbox. And when I brought up Notepad and typed the same thing, it typed in lower case. What would cause that behavior? Is there a way for us to turn it off?
I guess the point is that is probably wasn't your computer, your browser, your keyboard, or your wife causing it to happen.
Do you need to?
If you are only supposed to type upper-case letters in a text box, what's the harm if they automatically become upper-case? It's not like the website prevents you from simply typing in the usual way (holding Shift).