Quote Originally Posted by drone
If you are posting here using the same computer, it's unlikely that there is a hardware issue. You can surf the web with no problem, but not do certain interactive web stuff? My guess is your firewall, are you using XP's built-in firewall, or another one? It probably has certain ports blocked (https = 443 should be necessary for most logins, IRC = 194 and 6665-97)
I would guess it is the XP one. Can't log into secure things.