Thanks for the suggestions, however, I somehow doubt it has something to do with my site. I tested it on your site as well and it gives me the same problem after a while.
Also, it does this in Firefox (despite having cleared all my cache) and Chrome, but not IE. I even tried on a different computer and it still behaves this way. Try leave the tab with the rotator open while and do some work in another tab, then return and watch it a few minutes.
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