Firefox 3 - known issue Mozilla recently released version 3 of the Firefox web browser. A known compliance issue has been discovered when using this version, related to the Windows Media Player plug-in used for the browser. As a result of this, you may experience intermittent difficulties when viewing video webcasts during this event, if you are using the Firefox 3 browser. We recommend that in these cases, you switch to using either the Internet Explorer (for Windows users) or Safari (for Mac users) browsers.