I have a Ubuntu 8.04 LTS running OX Build: 6.8.1-6811, 2009-03-23 14:26:41 .
Today I noticed a minor Bug when showing mails in the sent folder. Normally OX is so intelligent to display the "To" instead of "From" when showing mails in the "Sent Mail" folder (as "From" would just always list the user's mail address that sent the mail out, which is by nature always the same)
Unfortunately OX is not smart enough to do the same in subfolders under "Sent" folder. I created a folder under "Sent" and moved some old mails into it. Listing the content of that folder, OX did only list who sent out the mail (over and over my mail address) instead of listing who got the mail, which would be much more interesting.
Maybe you can fix that minor bug sometimes.