Thanks for the feedback, I've changed the order now and it makes much more sense. Jobroller and Classipress are not based on the latest versions. I updated Jobroller to 1.7 this morning and the site seems to be holding up, however Classipress 3.3 promptly broke everything so more work needed there.
Once these themes are stable I'll look at bringing in responsive design and building everything in LESS to make updating easier.
C