I have Trillian. I cannot get my Yahoo! IM name to connect. It says invalid password. But the password is valid, I have it taped to the back of my keyboard. I have an email address, but my Yahoo! IM name is different. Could that be the cause?
There's a new patch out for Trill. Go to http://www.trillian.cc
and then their Downloads Section. Creulean comes out with new patches every couple of months. For some reason, Yahoo is trying to keep other programs from using their Chat System. No biggie. I had the same problem and now it's fixed.
For those who don't use Trill, I highly recommend it. It's free Multi-Chat system that will monitor your AIM, Yahoo, MSN, IRC, ICQ Chats all in one convienent portable lil system. I've been using it for up to 2years now and haven't had any problems at all. The Free System is great, and they always jump up to fix any problems as soon as they happen.