I have an AOL account which I connect through Telewest (not the AOL/Cable deal - mine's a separate arrangement with AOL). The problem you're experiencing sounds most likely to be an MTU issue.
Grab Dr TCP -
http://www.softpedia.com/get/Tweak/N...ak/DrTCP.shtml
It's a little program which should help solve this problem. You will probably need to adjust your MTU for that machine, down by 28 bytes (1500 down to 1472). Occasionally it's necessary to adjust it down as low as 1430, and I have known people have to set their MTU at 1350 but theirs was a protracted setup.
Anyway, adjust it down by multiples of 28 until you get the connection you're looking for. You will also probably have to reboot your PC each time you change it.
Hope this helps.