I don’t know if anyone noticed this but you don’t actually need to fill the captcha while logging into TorrentLeech (TL). Whether this is intentional on the part of TL’s admins or if this is simply a site bug remains to be seen. Whatever it is, you can type username, password, leave the captcha field blank and still log into the tracker.
I only found this out yesterday after being a member there for ages. Kind of feel bad for the wasted text strings I inputted all this time :P