Firefox crashes when playing video

For as long as I can remember, I’ve had problems with WMV files playing under Firefox - maybe 80% of the time, when attempting to load a page with embedded video, the browser would just ‘go away’. No error dialog, no bleep, nothing.

Turns out, this is a conflict with the excellent VideoLanClient player’s WMV plugin for Firefox. The fix is quick & painless - Locate your Mozilla Firefox plugins folder (usually C:\Program Files\Mozilla Firefox\Plugins) and remove the file npvlc.dll (or just drag it somewhere else for safe keeping).

So far, I haven’t found any detrimental effects and now VMW files play just fine all the time.

More info from the Firefox FAQ here.