Router configuration expert please Help

I have traced my original quoted problem of few sites not opening to something fishy with Router who is dialing the PPTP / VPN. I dialed through the desktop dialer and all sites started opening fine.

What could be wrong? I am using TP LINK WR741N. PPTP Connection. Some sites stop at "Website found and waiting for reply" and they hang their forever.

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no problem!

guys i m asking is there a way to troubleshoot such case at my end

bump. Edited the Original Post with updated problem

I contacted the TPLink support via email. They suggested to reduce the MTU Size. Now it's working fine.

You can find the correct MTU value, using this method http://www.wiredpakistan.com/forums/viewtopic.php?id=15893

i suggest you to upgrade your current firmware