It has two simple chapter marks.
Make sure no chapter markers are within two seconds of the start or end of the timeline. Make sure no chapter markers are within a transition. Make sure no chapter markers are within two seconds of the end of a transition.
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iDVD 5.0.1 may appear to hang for a few minutes during audio encoding. See my Topic:
Len Goff, "iDVD 5 appears "hung" at audio encoding", 11:41am May 11, 2005 CDT
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Suggest you create a disc image and then burn the DVD. File/Save As Disc Image...
http://docs.info.apple.com/article.html?artnum=164927
This will isolate any encoding/burning issues you may encounter. Once the disc image is created, double-click the .img and burn the virtual disc that should appear on your desktop, using Toast to burn the DVD. Disk Utility to burn the .img file. Usually, you can select a burning speed in Disk Utility.
Open Disk Utility (in Utilities folder in Applications folder), click on the virtual disc (not the .img, the one below) in the left-hand window. Click the Burn icon. Your SuperDrive tray will open. Insert a recordable DVD. (DVD-R preferred by me.) Click the Close button. Wait. Then click the Burn button.
-->If the virtual disk selection won't allow you to click the Burn icon, use the .img file instead. This may have changed in 10.3.9 and did change in Tiger.
b Also, you can use DVD Player to play the virtual disk to check your iDVD 5 project before burning to DVD. Launch DVD Player. File/Open VIDEO_TS (Open DVD media... in Player 4.6). Find the VIDEO_TS folder and open that. (The audio folder is for DVD-Audio disks.)
http://docs.info.apple.com/article.html?artnum=93006
