Can anyone tell me where I’m going wrong??

Hi, I tried to change my theme recently to Nathan Rice’s Deepblue as I want to run ads on my blog now and whilst I could get the theme up – I when I tested it I wasn’t getting any comments through…nothing, not even a whisper…yet when I changed my theme back (to Connections) the comments came straight through again. Any ideas what I was doing wrong if anything or is it a known fault on the theme? Everything seemed to be set in the back office to allow comments on Connections and I presume the setting would be the same on the Deepblue one too – or is this a wrong assumption? Any help would be gratefully received. ta!