I found a slight hiccup in the pagination mechanism.
Open
http://serverfault.com/questions/tagged/dhcp
I got 88 results and the first page shows 15.
Click on page 6
http://serverfault.com/questions/tagged?tagnames=dhcp&page=6&sort=newest&pagesize=15
Now click on "50 per page".
http://serverfault.com/questions/tagged?tagnames=dhcp&page=6&sort=newest&pagesize=50
Because it retains the 'page=6' you get an empty page as there are only two pages when you do 50 per page on 88 results.
Expected behavior: A page that contains at least some of the items from where I came. So in this example I would have expected to see page 2.
status-bydesign