In Impress v4.1 slide transition > Advance Slide Automatically After… now has a dot for milliseconds - why?! - and the maximum seems to be 99.99sec.
That makes Impress useless if you, for example, want to auto-advance a bunch of video clips. I had to revert to LibreOffice 4.0.3, that still allows slides of 360sec (six minutes) or longer.
Is this a bug in 4.1 or a conscious decision?