if you ask me, UDF and packet writing is now gone the way of the dodo. i am not sure why windows users would still enjoy it, unless, like myself you were into UDF and packet writing in the mid-to-late-90s when CD-writing was in vogue.
with the advent of DVD-R, DVD-RW, thumbdrives, iPods, and a whole other smattering of portable usb and firewire external disks, the wait and hassle of CD-burning is slowly dying off.
perhaps i am generalising too much, but maybe people (like myself) like it just to pull several fresh CDRWs every month or so to have stuff on optical media backup ? ( i imagine it would survive a fire or water damage or lightning better than hard drives, internal or external )
otherwise i much more frequently and efficienty and enjoyably backup to iDisk (small critical stuff), .Mac (essential personal stuff), iPod (my teaching materials), and the Beast (160gb fw400 external drive)
towards the end of the year i'd probably get into researching an external FW400 5.25" enclosure for a juicy Pioneer fast DVD-RW (for optical backing up of critical files) and DVD-R dual layer (for backing up DVDs) burner.
personally, i sympathise with your frustrations, hopefully shareware or Roxio can solve your Mac UDF / packet writing issues... i feel apple was wise to not focus to much resources on it in Tiger and Panther
edit: also: broadband, internet cafes, webmail, eg, gMail with 2gb and counting, backing up is getting easier for the average consumer .. we trust great big anonymous machines scattered across the globe with all our information now. and ONE DAY THEY WILL BECOME SELF-AWARE..!!!!
oh shit paranoid attack....
heh... just kidding.
what's that iBook? you want me to put my hand in this wall socket?
won't that electrocute me?
no? oh, you want me to merge with your global internet-enabled consciousness?