Can using Rich Snippets hurt your Google rankings?

[Bewenched]

Has anyone experienced loss in Google rankings because of adding rich snippets to your ecommerce product pages.

We recently updated our pages to include rich snippets for product information and breadcrumbs and now our pages are performing horribly on Google.

I've verified that they are written correctly, so now what?

[goodroi]

I haven't heard of ranking issues from rich snippets but I wouldn't be surprised. The more content you display on the serps, the less reason there is to click through to your page and I wouldn't be surprised if a lower CTR would eventually lead to lower rankings.