Problem
I've just published the slide show and all of the bullet points (based on List Bullet) are displayed as ordinary text using Times New Roman and with no bullets.
Reason
This can happen if the List Style setting for the Style object has been changed to None or Skip Numbering (if the Style object has been modified, or the template the Style object is based on has been changed). This setting is checked when the presentation is published.
Solution
Open the Style object, go to Web > List Style and choose the Bullet style.