That doesn't appear to happen except in IE, the most widely used browser. I'd still say that's a real problem. I don't know why it is happening but, it seems to only start flickering when you put the mouse over the other image on the page and the IE image toolbar appears. In the split second before the toolbar appears, there is no flickering. So, just disable the toolbar on any images on your page that might cause this problem, ex:
Code:
<img galleryimg="no" src="images/site/test.gif" border="0">
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