must have been a dvd structure issue.
i was really going for the burn.
i typically only use main movie, but this was supposed to be fixed in 188.8.131.52.
When preserving menus, the unselected titles will not be played. In previous versions, the unselected titles will be converted to empty title and will be played.
a while back when i used to save the main menu i did notice slight playback delay. even in a few cases had to press the skip button to access the menu.
i noticed that your last two burns were 4.19 Gb. and 3.89 Gb. so your not doing full disc. are you using customize with preserve menus? im still learning about pathplayer so i can not comment on whats happening there. since you dont seem to be using the pathplayer options you could disable pathplayer and see the results?
since your drive doesnt support bitsetting. you might get a small package of dvd-r disc and see if you like them. as dvd-r is more compatible with dvd players than dvd+r. (unless you can booktype as dvd-rom)
I use memorex dvd+r and have never had a problem until got new laptop with windows vista.
its my opinion, that if you have any burning issues? it will be the combination of your slim type drive and the RICOHJPN disc. slim type drives are problematic and as far as i know only a few manufactures. im sure this will soon change.