ok, im having the same problem, im using internet explorer 6 and stuff. ok it seems to be a security problem when using a DSL modem and a Lan router. they both have firewall enable. I log succesfully into my yahoo mail, but when i clikc on INBOX it loads an error page. so i cant access my yahoomail, I did deleted cookies, clear cache, deleted history, restart internet settings,and even reseted dsl modem. Prolly you guys are using Earthlink if correct. They seem to have a problem with yahoo mail for some reason. Yet, i have 4 months already with earthlink, and im not able to get a solution with my issue. I first got that problem since day one i got earthlinks dsl, AOL dsl was working perfeclty along yahoo. now the only webmail im able to check is my earthlink one. that sucks.