It is possible that when you did the test, APT was auto-updating its cache in the background. Maybe you can try again, and use the panel applet in the "netspeed" package to make sure your connection is really free when you're doing the test.
-- [Edgy] Network connection is faster with live cd, slower with installed system https://launchpad.net/bugs/66603 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
