mån 2009-07-20 klockan 09:49 -0400 skrev Mike Mitchell: > My guess is there is a firewall protecting the remote web servers. Has anyone seen this behavior before? Have not seen it on this level. Generally the type of issues you describe is either Window Scaling or ECN related (both are standardized TCP features frequently broken by old firewalls), but I have not heard of Cache-Control having any impact on it before... Regards Henrik