Best MTU setting for 512/128Kb DSL line?

[Jugernot]

What do you guys think I should set it at?

 

[dave1980]

leave the mtu at the default (1500 at most cases), the RWIN should be set at 32k for max throughput.

go here dslreports and click on tools on your left hand side. from there test your line speed and tweak tester, look at the recommendations the tweak page gives you.