Prompted for Captcha without doing any upgrade 11.10.10

Today I have noticed that our installation is asking users to enter Captcha (doesn’t matter you don’t enter it) to log in. We didn’t do any upgrade, so I am wondering if there is any code in the back that pulled this now?

I wish our software was that intelligent :wink:

I guess the most likely cause is a change in configuration or some installation of extension.

right, it was a plugin upgrade.