reCaptcha on craigslist triggers every single time

It's actually about 99% of the time, but it only happens on my desktop. My notebook never asks for captcha confirmation. This is a recent development, as of a few weeks ago. I updated to Windows 10 yesterday and preserved my settings, and it's still happening. Is there something that could have changed on the desktop to cause this? I have done several malware searches and have turned up nothing, so I expect it's not that. -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://bit.ly/1dkFnYd. For more options, visit http://bit.ly/P65DvS.