I enjoy the mobile version of the site a lot, but I bump into one issue pretty much every day:
The last pages numbering are really close to the next page arrow (78, 79, 80 >>) and on my mobile it's a crapshoot which one I actually hit. Both on my current large screen, high res phone (HTC One X), and my previous budget phone half the size.
It would really benefit my experience if the space between them was enlarged in the layout.