For context: I am using a new Dell laptop with beefed up hardware and Lightroom 1.3.1.

When I create a slideshow in Lightroom to show a client/reception, sometimes after a little while the slideshow will jump back to the first image I started the slideshow on. Sometimes it goes for a while, sometimes it doesn't. It is killing me because I need to set the show up for the reception. Any ideas on how I can solve this issue?

That's strange. I don't have an answer, but it's working fine for me on Mac 10.4 and 10.5. If you have the time you can export JPGs and use the slideshow in Bridge or the screensaver to play the show...

Your screensaver or power saving settings aren't kicking in are they?

Maybe someone else will chime in. If not I'd post it on the Adobe Forums

No screen savers or power savings. It is faster than that. I read somewhere that I need make them 1:1 previews and it will fix the issue. I'll let everyone know if that fixes it.