yeah they are still having some maintenance for Chat Rooms and its the captcha not letting you join the room.. over 15 is fine just they doing maintenance so everything **** up but yeah try a name under 15 or 10 and you will be fine and if you still can not get voice try

v2.vc.sp1.yahoo.com
v3.vc.sp1.yahoo.com
v4.vc.sp1.yahoo.com
v5.vc.sp1.yahoo.com
v6.vc.sp1.yahoo.com
vc1.vc.vip.re2.yahoo.com

KriS