I thought I'd try out Balsa (http://balsa.gnome.org/) - Evolution is too slow and clunky, and Thunderbird is good, but I was hoping to use something native to GNOME. Or at least as native as one can get with GNOME.
I managed to import numerous emails from KDE, but Balsa is proving to be incredibly buggy. If I scroll through each message in my inbox using the arrow keys, Balsa will hang once I've looked at say two or three messages. Every time. It's a shame as it looks like a useful, light mail client. Well not so useful if you can't view messages!