I am a relatively new user to PTE, but was encouraged top have a go at a new presentation following a lecture at my camera club. It was here I found out about the Timeline and how it might be used - which was the start of my problems. I hope someone here can help, as the support people either don't understand my problem or think a gross difference in presentation timing, depending on a simple button click, are 'normal'. Their reply to my second attempt to make sense of my results was: "We have never received such complains. Please, could you ask for an advice at our forum: http://www.picturestoexe.com/forums/index.php" Hence I am here asking for help/explanation. My problem: I created a presentation using 66 slides and using the global settings dialogue to set the slide display time and the transition times between slides. My understanding was that the controlling factor was the slide display time with the transition time eating in to this. This should have given a presentation time of a little over two minutes at 2.5 seconds per slide. When I ran the music of this length, it lasted for just over HALF of the actual presentation time. I thought this was my understanding, being a newcomer. So I decided to adjust the timings using the Timeline button, having found a longer bit of music. Imagine my surprise when I found that the Timeline did what I originally expected!! A two and a half minute presentation was there, not the four and a half minutes of the same presentation before I clicked the Timeline button!!!!!!!! Has anyone any idea what is going on here, 'cos I haven't the faintest! How can the same set of global options give two completely different timing on the same 66 slides before and after a button press???!!! Ken.