"For the last week I have checked a page ranking of a specific site at
location A using a direct T1 connection and later that day from
location B using a wireless connection and the results are always the
same for each location but differ by 10 page rankings by location. Is
there a basis for this? "

Any idea if the above statement holds any merit ?? I have never actually analysied SERP by connection speeds. However, if Location "A" closet DC is different to locations "B" DC then would it make the sense correct ?? I mean both the DC would not be sync in real time within the ranking systems ..correct ??