I'm not claiming I've got the solution, but I can tell you I've been using your site for the past 5 minutes or so with no lockups. In the past few months I've had two customers who absolutely could not log into ebay. I found a suggestion that said it might have something to do with the MTU (Maximum Transmission Unit). Changing the MTU on their routers to 1492 (from 1500)immediately fixed the problem. So I gave this a try just now on my router... and so far so good.
