Maybe it's the fact that I don't use one of the three major US ISPs. Hopefully CDNs get used to the idea that there can be more than one fiber provider.
Would you mind sharing the Cloudflare ray id displayed at the bottom of the screen when you see a captcha? I can look into it, and maybe be I will able to fix it too. Reply here or email me at webmaster@cyberciti.biz. HTH.
Not sure if you changed your Cloudflare settings, or if Cloudflare changed something, but I'm no longer getting the captcha, so that's good, but sadly I can't help debug the original issue.