There's an issue with the Sale Flash Pro extension from WooCommerce. I'm not sure if it's related to Propulsion or to WooCommerce's upgrade to version 1.6.2. Can you take a look at it? I've also informed WooCommerce support.
The Sale Flash doesn't show in Safari for Mac. Here's a screenshot: http://farm8.staticflickr.com/7250/7749775704_48d48e3da1_b.jpg/
The Sale Flash shows in Firefox for Mac but it's placed in the wrong position. Here's a screenshot: http://farm9.staticflickr.com/8424/7749775552_e8774ec4ce_b.jpg