Before it is suggested, I have fully updated the browser, and updating flash more times than I can count. In addition, this has been going on through many firefox updates, so it is not limited to just the recent update. I run Firefox on OSX Tiger, and for about a year now firefox has about a 50% chance of randomly closing whenever I view a website that has streaming video content. Some examples are ESPN, Hulu, MLB.tv and YouTube. It is NOT an official crash though. No crash reports are registered, no error messages are given, Firefox simply closes completely with not so much as a "terminal error" pop-up. I usually have to watch content from sites that use steaming content on Safari just because Firefox is so unstable on my system when loading ANY video content. This issue is NOT limited to flash, as Firefox will do the same thing with non-flash video with pretty much the same regularity. PLEASE don't just tell me to update again, I've done that countless times for each and every update of Firefox in the last year. It has NEVER worked. Although I'm 95% sure that flash is installed fine, because I never have any problems with it on Safari. Thank you for any help you can give me. Currently Using Firefox 3.6.7 OSX 10.4.11 == User Agent == Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_4_11; en) AppleWebKit/533.16 (KHTML, like Gecko) Version/4.1 Safari/533.16