Scratch that. Talked to the developer of Asunder, he thinks that it's a bug in GTK. A bit of googling shows that other people are reporting similar behavior in Red Hat. See https://bugzilla.redhat.com/show_bug.cgi?id=659902.
** Bug watch added: Red Hat Bugzilla #659902 https://bugzilla.redhat.com/show_bug.cgi?id=659902 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/694579 Title: Destination folder changes each time Preferences dialog is entered -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs