I'm still on 7.1.0.9 (and have no plans to switch), and I can't remember the last time I had mailbox corruption. The view window sometimes paints improperly if I scroll with the page down key too quickly, which annoys me.

Too bad they didn't open source the last real client. I'd like to get rid of the headers like "From: "=?ISO-2022-JP?B?GyRCJTUhPCVTJTklaiU5JT8hPCVIGyhC?="".