Hi
You may have some clips/slides locked leaving too small a space????
As you probably already know..
The duration of slides (still images) can be controlled in three ways...
1) Setting the default duration under the Tools/Options/Media window before adding any clips to VP
2) Going into Storyboard mode and changing the duration shown for that slide under the thumbnail
3) Grabbing the leading or trailing edge of the image clip on the timeline and dragging it right or left.
- and normally you should have no problem in changing the value to something larger than the current value, so I don't know why it should be fixed at 3.97. If you haven't already, try the last two options and see what happens
Nat