I recently got the following error message “Warning: fsockopen(): unable to connect to www.sweetcaptcha.com:80 (Connection refused)”
One of the major issues I had with this, is I had turned on sweetcaptcha for the login page, and could not login.
When I Googled it I came up with some answers, but not the right answer. One answer that was given was that my hosting company had blocked the add-on from communicating, but after discussions with them that was not the problem.
The first thing I needed to do was remove the plugin via my ftp server. All of your plugins are located in wp-content – plugins folder. Backup the faulty plugin folder and then delete it.
Now that I could get in, I updating all my plugins, and WordPress itself, in this instance it was to WordPress 3.5.1.
I have said it before, but I will say it again, you should continually update your wordpress backbone. They release the updates for a reason, mostly security flaws, but without the updates you are vulnerable.