I've been using YuBurner for some time, and encountered a problem, which reoccurs (on Panther - 10.3.9).
After burning one DVD (ISO/Joliet), I eject the DVD and re-insert it. It does not show up. I now try burning another (with new contents) and YuBurner says "Burn finished" and burned a nice empty DVD.
I reset my Mac, and insert the first DVD, this shows up alright, all the files are there. The second DVD is still empty and cannot be burned onto again.
I think the software needs an update, and I'd also like people to know that it's probably a good idea to reset the computer after using YuBurner, in case you want to read the DVD just burned or burn another DVD...

Worryingly easy to use! I'm still at a loss as to why Apple decided it should be impossible to make ISO9660 discs...

Features I'd love to see, but not holding my breath for:
- Mac/PC hybrid data CD & DVD
- VideoCD
Probably not appropriate to a stripped-down tool like this.

it overburns better than toast. i love this program.

Works for me. Burned an ISO 9660 CD and then a CD-RW and both read fine on a Mac and a PC. Next I'll try Joliet format. No way to try DVD burning as I don't have a SuperDrive.

Interface is a little klunky and it has typos, but you can't beat the price. There's no other freeware CD burner I've tried that can handle ISO 9660 and Joliet formats.