So have all you people tried anything to fix this issue yourselves? I mean it is all well and good pointing the finger at SE but it would effect everyone if it was something SE could fix.
Why would some people lag and other not lag?
I am in the UK and i can get out of circles without problem. I do not lag either unless it is a really busy area and that is normal for an MMO.

Have you guys tried turning your game graphics down as low as it can go for instance?
How about plugging your router into the Master Socket (for phone line users)
Just because lots of people lag doesn't mean you are all suffering from the same cause.
How about moving cordless phones away from routers?
Not using wireless?
Even mobile phones can effect things.