Try:
	sudo ifconfig ppp0 mtu 1350

if pages are slow. Or automate this with

	sudo vi /System/Library/SystemConfiguration/Kicker.bundle/Contents/Resources/Kicker.xml

and add to the end the contents of Kicker-addon.cml just after the 
last </dict> but before the last </array>. 

Next cp:

	sudo cp set-mtu /System/Library/SystemConfiguration/Kicker.bundle/Contents/Resources/set-mtu