Word Verification

I seem to be getting the verification window at the bottom of my posts. I agree that this is good since it deters spammers from sending spam. I am just wondering why in the last 2 days why I seem to be getting it on every post.

PS I read and post from 2 different computers and IP's (Could this be why)

I also cant seem to get Safari on my Iphone to allow me to type text. Has any one else tried to post on their iphone.