I just thought I should let you know that I have tested your plugin to work with the plugin "Limit Login Attempts" and it is the first of say, 20 or so, that actually worked hand in hand with the other. Only issue is that when you enter the wrong Captcha the Limit Login Attempts error message overrides yours but that does not matter really. It works and I am oh so happy. Oh, yeah, and it also doesn't break Jigoshop (another problem I had). So, yay, you rock!