seven forums and FireFox

yesterday i lost my password for the site and did the password recovery in FireFox
when i tried to do the image verification it wouldnt accept what i was putting in as being correct even thought it was, tried it several times with different images making sure it was exactly correct, also did the sound thing with no luck.
jumped onto IE 64bit and it worked first time no probs, so a bug with FF maybe?
it may well be written here some where and ive missed it but just thought id mention it.:)