i have WAG54G2 too, bought it from 07/2009 PC Fair. Used it for about 5 months then one day it suddenly cannot connect to the internet, took it back to the shop and they replace a new unit for me, first i was happy coz it's a new unit.

Took it back home and configure all the settings, username and password, damn, not working, not connecting to the internet, DSL light keep blinking

Talked with linksys support for about 1 hour for all the possible configurations, still not working. Called streamyx to reset my password (who knows i might forgot the password and keyed in the wrong one), still no luck.