How do I skip a specific overlay on a beamer slide

I have a slide with many overlays. Shortly before the talk I notice that I need to save some time, and I want to remove one overlay from the slide, i.e. go from overlay 3 directly to 5.

Is there a way to do so, besides manually re-numbering all overlay numbers >4?

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(Untested, hence a comment) Try changing the \begin{frame} to \begin{frame}<1-3,5->. –  Andrew Stacey Feb 5 at 9:42
@AndrewStacey Tested: Remember where it is and click the right button twice on the small wireless click-thing with a laser pointer :) BTW, if I remember correctly, the "overlays" are called "slides". –  tohecz Feb 5 at 10:06

You can specify which overlays are actually rendered by adding an overlay specification to the \begin{frame} of the frame environment. For the case described here, putting:
\begin{frame}<1-3,5->