User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:2.0) Gecko/20110321 Firefox/4.0 Build Identifier: Mozilla/5.0 (X11; Linux x86_64; rv:2.0) Gecko/20110321 Firefox/4.0 I use Flashblock when I click to load the applet, Firefox crashes. I wouldn't worry about the usual Flash **** if Firefox was not supposed to crash because of a plugin anymore. Reproducible: Always Steps to Reproduce: 1. Go to the URL 2. Start the applet if Flash is blocked Actual Results: Firefox crashes instantly Expected Results: I don't think I saw such a crasher since plugins run in a different process. This is the branded Firefox on Archlinux x86_64.
This is printed on the console when the page is loaded: *** NSPlugin Viewer *** WARNING: unhandled variable 18 (<unknown variable>) in NPN_GetValue() This is printed when Firefox crashes: firefox: symbol lookup error: /usr/lib/mozilla/plugins/libvlcplugin.so: undefined symbol: NPP_Initialize Strange, it's a Flash video.
Have you submitted any crash reports? If so then look in about:crashes and post the id:s/links here. Also try to run in Safe Mode and see if that makes any difference: https://support.mozilla.com/en-US/kb/Safe+Mode Peeking into the page source the video seems to be a mix of Flash and Silverlight and I've no idea why the vlc plugin gets involved. Do you still get crashes if you disable the vlc plugin in the Add-ons Manager?
https://developer.mozilla.org/en/How_to_get_a_stacktrace_for_a_bug_report#Linux this is probably a bug in vlc (which is probably pretending to be flash player -- see about:plugins)
I'm afraid the page changed, so I cannot reproduce the bug. I have to close it. Sorry for the noise.