I'm looking to do a clean install of 10.5.2, and have most of my data backed up. The only things I don't know how to backup are my mail.app mailboxes and their content. I use IMAP so in theory I could just do a clean install and redownload all my mail. However my mail is over 2GB and it would take a long time to redownload that content. Is there any way to backup the mailboxes, so that I can restore them into mail.app after the clean install and not have to redownload them? thanks.