I’ll try that CSS and see what happens.
What about where the format changes at 1025px using 110 and 125% zoom ? The CSS provided wont stop that occurring which is more so what I see as a bug.
The issue below the footer I assumed would be associated to a combination of padding areas and the like given the CSS I used to manipulate it.
The extra area below widgets however occurs from 1024px not 768. I will play around with the CSS above changing values and see what happens.
I will also try the updated theme you emailed earlier following that.