Have upgraded from twenty ten to twenty eleven.
Two issues are bugging me:
1) Twenty eleven trees to be too clever - especially when viewing a Twenty Elven page with say a gallery. Most smart phones will resize the page and images. Twenty Eleven tired to push the gallery images over one anther. I don't like it. Twenty Ten handled galleries on a smart phone better.
2) Often NextGen galleries viewed on an iPad go crazy! You call up an image from your gallery and the image loads but gets into a loop where it flickers on and off and there is no way to ove forward >> or backward <<
PB