I installed this theme on egear.be because Devpress claims the theme is mobile optimized.
Well, it is not!
I tried a lot of different settings but on iphone and ipad (and other mobile devices) the theme still sucks.
After asking some questions on the wordpress.org forums ( http://wordpress.org/support/topic/problem-with-oxygen-theme-and-mobile?replies=14 ) I found out that the theme is only mobile optimized for wordpress.com and not for self-hosted wordpress.org sites.
I would only recommend the oxygen theme after these issues are solved. These days you just cannot have a site anymore that doesn't look nice on mobile.