I have changed the MTU in the registry for the dial up adapter entry used to connect to plusnet. There is a setting in the AccessRunner control panel to limit packet size, is this the same as MTU? Does this override the setting?
Yes it should over ride the settings however to check just open the access runner control pannel and then press Alt + C then click on protcol setup and then u can change it. I have not changed mine and my conneciton is fine...
1.7 GHz AMD XP, 768MB DDR PC2100 Crucial, 120 GB HD IBM Deskstar