Problem with Firefox

[ursusca]

Hi all!

While Firefox is running the process is using more than 50% of my total CPU.

Tasks: 135 total, 4 running, 131 sleeping, 0 stopped, 0 zombie
Cpu(s): 51.0%us, 0.2%sy, 0.2%ni, 39.7%id, 9.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 506296k total, 499940k used, 6356k free, 9532k buffers
Swap: 1004052k total, 3492k used, 1000560k free, 118088k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
20412 mike 20 0 94180 19m 9m R 94 4.0 1:12.74 gtk-gnash
19667 mike 20 0 236m 150m 21m R 7 30.5 3:09.16 opera
19798 mike 39 19 130m 22m 11m S 7 4.6 4:40.88 operapluginwrap
19516 root 20 0 347m 34m 9364 S 1 7.1 1:08.67 X
20394 mike 20 0 171m 47m 21m S 1 9.5 0:04.35 firefox-bin
10 root 15 -5 0 0 0 S 0 0.0 0:02.30 events/1
231 root 15 -5 0 0 0 S 0 0.0 0:01.56 kswapd0
19592 mike 20 0 14000 4872 3904 S 0 1.0 0:03.53 gnome-screensav
19640 mike 20 0 45288 12m 9692 S 0 2.6 0:02.25 mixer_applet2
20250 mike 20 0 80968 17m 11m S 0 3.5 0:02.25 stardict
1 root 20 0 1592 480 452 S 0 0.1 0:04.74 init
2 root 15 -5 0 0 0 S 0 0.0 0:00.00 kthreadd
3 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/0
4 root 15 -5 0 0 0 S 0 0.0 0:00.86 ksoftirqd/0
5 root RT -5 0 0 0 S 0 0.0 0:00.06 watchdog/0
6 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/1
7 root 15 -5 0 0 0 S 0 0.0 0:00.85 ksoftirqd/1

Can anybody help me?

emerge --info
Portage 2.1.4.5 (default/linux/x86/2008.0, gcc-4.1.2, glibc-2.6.1-r0, 2.6.26-gentoo-r4 i686)
=================================================================
System uname: 2.6.26-gentoo-r4 i686 Intel(R) Core(TM)2 CPU T5600 @ 1.83GHz
Timestamp of tree: Tue, 16 Dec 2008 20:00:01 +0000
app-shells/bash: 3.2_p33
dev-java/java-config: 1.3.7-r1, 2.1.6
dev-lang/python: 2.4.4-r13, 2.5.2-r7
dev-python/pycrypto: 2.0.1-r6
sys-apps/baselayout: 1.12.11.1
sys-apps/sandbox: 1.2.18.1-r2
sys-devel/autoconf: 2.13, 2.61-r2
sys-devel/automake: 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1-r1
sys-devel/binutils: 2.18-r3
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool: 1.5.26
virtual/os-headers: 2.6.23-r3
ACCEPT_KEYWORDS="x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=i686 -pipe"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config /var/lib/hsqldb"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-O2 -march=i686 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="distlocks metadata-transfer sandbox sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo"
LANG="en_US.UTF-8"
LDFLAGS="-Wl,-O1"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X acl alsa arts berkdb bzip2 cdr cli cracklib crypt cups dbus dri dvd dvdr fortran gdbm gnome gpm gtk hal iconv ipv6 isdnlog java kde midi mudflap ncurses nls nptl nptlonly opengl openmp pam pcre perl portaudio pppd python qt3 qt4 readline reflection session spl ssl sysfs tcpd udf unicode x86 xorg xulrunner zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" USERLAND="GNU" VIDEO_CARDS="fbdev glint i810 intel mach64 mga neomagic nv r128 radeon savage sis tdfx trident vesa vga via vmware voodoo"
Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LC_ALL, LINGUAS, MAKEOPTS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY

I tried to re-emerge it and emerged mozilla-firefox-3.0.4-r2 but anyway I got the same result.

[ursusca]

I've unmerged gnash and my system is OK now Anyway I do have net-www/netscape-flash.

Tasks: 136 total, 4 running, 132 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.5%us, 0.2%sy, 0.2%ni, 99.2%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 506296k total, 498576k used, 7720k free, 31016k buffers
Swap: 1004052k total, 6360k used, 997692k free, 186676k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6169 mike 20 0 200m 90m 15m S 4 18.4 0:07.79 opera
6228 mike 39 19 63772 13m 8640 R 4 2.8 0:04.31 operapluginwrap
6257 mike 20 0 169m 47m 22m S 1 9.6 0:01.88 firefox
5377 root 20 0 326m 16m 4792 S 0 3.4 0:25.45 X
5761 mike 20 0 30840 3028 2048 S 0 0.6 0:00.90 espeak
6248 root 20 0 2252 1148 848 R 0 0.2 0:00.09 top
20526 mike 20 0 30840 2952 2072 R 0 0.6 0:03.58 espeak
1 root 20 0 1592 480 452 S 0 0.1 0:04.77 init
2 root 15 -5 0 0 0 S 0 0.0 0:00.00 kthreadd
3 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/0
4 root 15 -5 0 0 0 S 0 0.0 0:01.45 ksoftirqd/0
5 root RT -5 0 0 0 S 0 0.0 0:00.08 watchdog/0
6 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/1
7 root 15 -5 0 0 0 S 0 0.0 0:01.16 ksoftirqd/1
8 root RT -5 0 0 0 S 0 0.0 0:00.00 watchdog/1
9 root 15 -5 0 0 0 S 0 0.0 0:02.03 events/0
10 root 15 -5 0 0 0 S 0 0.0 0:04.52 events/1