I've got the same problem. I'm new to this software but was impressed with the project as seen on my computer. But when I saved to disk to play on my DVD recorder, the slide show although set to 3 seconds per slide was all over the place and eventually stuck - even though the music carried on with no problem.
My photos are jpegs but quite large and there are a lot of them in the show. Is this likely to be the problem - would be better to reduce all the file sizes and start again?
I'd like to sort it out as it seems a good program. It does everything I want on screen but it's not going to be any use to me if I can't transfer to DVD reliably