What is recently 3 weeks ago or so? I dont save site info so you would need to resent and explain exactly what your issue is.
As far as captcha for guests you must be using all the new files so you might want to download photopost reupload the whole thing except config files and you need GD2 on your server. You make sure under registration options captcha is on and you should as a guest see it. If not then please resent any info.