Ah. your route isn't set.
This isn't definite solution but if it works then we just need to see where things are going wrong. Try this command and see if net works
Code:
sudo route add default 125.99.88.1
This will only stay till the reboot.
If the above makes your connection work then post the contents of /etc/network/interfaces file.
And haan remember to remove that stupid network manager if you're on static IP. It's been one BIG reason for my troubles.
BTW, those 3 DNS servers you have are really crappy. Hathway has given me the same ones. I grew so tired of it that I have been running my own DNS server since like last one year.
And the 2 DNS IP's I gave you are from OpenDNS.