Typing letters suddenly become all caps

[Atrocious]

I got this strange problem, currently it seems to only be a problem with replies to whispers(as far as I can remember). I get a whisper then I reply a few times, and suddenly everything I type is in caps. Clicking a textbox control in another non-wow window solves it. Nope, caps lock does not come on, I've already checked that.

Anyone else got this problem? Not a huge deal, but just wondered if someone has the same, and have found a permanent fix for it. Using Win 7 64 bit.

[dancook]

I've encountered the same issue, I've broadcasting all keys and typed out into guild chat on all five chars - 3 were in caps, 2 were not.

Wasn't sure why.

[Svpernova09]

I have nothing to contribute aside from "You've activated ISBoxer's FENRIL MODE"