I just upgraded to Thunderbird 3.0 and am loving this email client. I have replaced the mail client on both of my macs and my desktop PC with Thunderbird 3.0. I highly recommend it! Go Mozilla!
I am a freelance software architect living in Colorado Springs, Colorado. My company is Akanomi Softworks (http://www.akanomi.com/) where I spend most of my time designing and developing software solutions targeting Microsoft technologies.