It may be a problem with domain name resolution. Can you browser by numerical address? Does
http://64.179.4.149/ work but not
http://www.linuxquestions.org/ ? If so, check /etc/resolv.conf . It should have the word nameserver followed by the numerical address of your ISP's nameserver. If that is the problem, try putting
In the file you use to configure pppd (is it /etc/ppp/peers/adsl?) then replace /etc/resolv.conf with a symbolic link pointing at /etc/ppp/resolv.conf
Code:
mv /etc/resolv.conf /etc/resolv.original.conf
ln -s ppp/resolv.conf /etc/resolv.conf