Hello, we use EasyDNNsolutions Rotator for DotNetNuke. When the ratotor is horizontal sliding, the right image has have half hight. After few time the image "plopp" to normal hight. In the other browsers works fine. Microsoft Page (XBOX.com) has the same problem. I found a fix. When set a background-color oder border then it works. EasyDNNsolutions Support says they cant can't recreate this issue and think that is a Firefox Bug. MFG Andreas Cortado AG