User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a3pre) Gecko/20100309 Minefield/3.7a3pre Firefox/3.6 Build Identifier: 20100309041426 Go to the site in the URL. Start scrolling down until you get to the Radar loop GIF on the right side. Wait until the GIF completes. For me the GIF just disappears. Then start scrolling down again. Reproducible: Always Steps to Reproduce: 1. Go to URL provided. Make sure d2d/dw is enabled 2. Scroll to the Radar loop GIF. Wait till it completes. 3. Actual Results: After GIF stops and disappears further scrolling causes screen corruption Expected Results: GIF should probably be looping and scrolling shouldn't cause screen corruption.

Interestingly enough the GIF is also showing corruption in normal firefox, although in that case it doesn't break the rest of the page! Requires further investigation.

Problem seems to be fixed in one of the latest hourlys. Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a3pre) Gecko/20100312 Minefield/3.7a3pre - Build ID: 20100312072530