We have now implemented an easier captcha and I have also re-written a whole free play module. Please let me know if you experience any issues.
I rather liked the captcha where you identify the items from the picture and then click on the blocks. {You only had to use
your mouse} ...now I have to type the letters and that is a bit more tedious and time consuming for us. I did not spot any
difference in the Free play module, so I reckon it might be in the backend.

I personally don't like recaptcha with all this next and skip buttons and ticking 10 pictures and after that you get "try again" message. It can be very frustrating some times.
This one is much better and faster.