VLC plugin (in any version) don't compatible with FireFox 4 (XUL-2.0).

Firefox 4 go to crash for attempt open URL what contains using VLC plugin with error(at linux): NPP_Initialize on /usr/lib64/nsbrowser/plugins/libvlcplugin.so This problem repeats in linux and windows, it don't depend of platforms Workaround for linux proposes here: http://bugs.gentoo.org/show_bug.cgi?id=361263 Please, VLC developers, pay attention to this problem. It complicates life.

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