Belkin router doesnt allow me to access certain sites like facebook

Hi guys,

I am using N150 Belkin router http://www.belkin.com/IWCatProductPage.process?Product_Id=492429

And I installed it to my neighbours ptcl dsl connection, I think its called AN1050 router. The problem is it does not allow me to access certain sites, keeps on giving error and it works only when I clear my browser's cache, my neighbours also cant access those sites when it is connected to this router. Can anyone help me? I am just here in Pakistan for few weeks, dial up is not even an option cause my phone line sucks.

try changing the MTU value to 1492...

[quote=“Mazahyr, post:2, topic:14648”]

try changing the MTU value to 1492…

[/quote]

Erm How do i do that?