Nspluginwrapper does not alway close out properly after a flash control is unloaded in Firefox, often causing the browser to hang, or in extreme instances it will overload the audio stack and disallow other programs access until the offending processes are terminated. Also resizing a Mozilla Firefox window will cause the browser to hang. The version of Firefox being used is irrelevant. Portage 2.1.1-r1 (default-linux/amd64/2006.1/desktop, gcc-4.1.1, glibc-2.4-r4, 2.6.18-agp-build6 x86_64) ================================================================= System uname: 2.6.18-agp-build6 x86_64 Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz Gentoo Base System version 1.12.6 Last Sync: Thu, 09 Nov 2006 22:00:01 +0000 app-admin/eselect-compiler: [Not Present] dev-java/java-config: 1.3.7, 2.0.30 dev-lang/python: 2.4.3-r4 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: [Not Present] dev-util/confcache: [Not Present] sys-apps/sandbox: 1.2.17 sys-devel/autoconf: 2.13, 2.60 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2 sys-devel/binutils: 2.16.1-r3 sys-devel/gcc-config: 1.3.13-r4 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf /etc/java-config/vms/ /etc/revdep-rebuild /etc/terminfo" CXXFLAGS="-march=nocona -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks metadata-transfer sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude='/distfiles' --exclude='/local' --exclude='/packages'" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="amd64 16bit 16bit-indices 16bittmp 64bit 7zip X a52 aac aalib acpi aim aimextras alias alsa amarok arts avahi berkdb bitmap-fonts branding cairo cddb cdparanoia cdr cdrom chroot cli colordiff cracklib crypt css cups daap dbus directfb divx dlloader dri dvbplayer dvd dvdr eds elibc_glibc emboss encode esd exif fam ffmpeg firefox fortran freetts gaim gcc64 gdbm gif gimp gimpprint glade gmedia gnome gnome-print gphoto2 gpm grammar gstreamer gtk gtk2 gtkhtml gtkspell gvim hal howl howl-compat html http httpd iconv icq id3 ident ieee1394 imagemagick input_devices_evdev input_devices_keyboard input_devices_mouse ipod ipv6 irc isdnlog java jpeg kde kernel_linux lame ldap libg++ libnotify libsexy libwww mad madwifi math mikmod mono mozdevelop mozilla mozsvg mozxmlterm mp3 mp4 mp4live mpeg mpeg2 mplayer msn msnextras musepack music musicbrainz nautilus ncurses nls nptl nptlonly ogg opengl openssl oss pam pcre pdf perl png ppds pppd python qt3 qt4 quicktime readline reflection samba sdl session spell spl ssl tcpd truetype truetype-fonts type1-fonts udev unicode userland_GNU video_cards_i810 vorbis xml xorg xv zlib" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
It's considered beta software (hence why it probably won't be taken out of ~amd64 anytime soon). These are all known bugs in it, but upstream is pretty slow about releases. I don't have the time to try and debug this, but I certainly will accept patches.
Reopening to close as FIXED, the latest one (0.9.91.2) is considerably more stable than previous releases.