firefox crashed

Binary package hint: firefox

... firefox crashes when browsed for "about:plugins" information

installed these plugins
totem was installed by distribution
pdf
flash
java
and real player
After installing real player, i typed "about:plugins" to see the registered plugins. application crashed with the below backtrace

srivatsark@sarvothma:~$ firefox
*** glibc detected *** /usr/lib/firefox/firefox-bin: malloc(): memory corruption: 0x08ad1310 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6[0xb76feef3]
/lib/tls/i686/cmov/libc.so.6(__libc_malloc+0x7e)[0xb770060e]
/usr/lib/libstdc++.so.6(_Znwj+0x27)[0xb788e207]
/usr/lib/firefox/libxpcom_core.so(NS_NewNativeLocalFile_P+0x2b)[0xb7e4ca0b]
/usr/lib/firefox/libxpcom_core.so[0xb7e4cc26]
/usr/lib/firefox/libxpcom_core.so[0xb7e73512]
/usr/lib/firefox/libxpcom_core.so[0xb7e6eec8]
/usr/lib/firefox/libxpcom_core.so[0xb7e705d4]
/usr/lib/firefox/libxpcom_core.so[0xb7e52ff4]
/usr/lib/firefox/libxpcom_core.so[0xb7e53383]
/usr/lib/firefox/components/libgklayout.so[0xb5b76401]
/usr/lib/firefox/components/libgklayout.so[0xb5b75e67]
/usr/lib/firefox/libxpcom_core.so(XPTC_InvokeByIndex+0x29)[0xb7e76579]
/usr/lib/firefox/components/libxpconnect.so[0xb67eedc4]
/usr/lib/firefox/components/libxpconnect.so[0xb67f56cf]
/usr/lib/firefox/libmozjs.so(js_Invoke+0x409)[0xb7ee9a19]
/usr/lib/firefox/libmozjs.so[0xb7edb57d]
/usr/lib/firefox/libmozjs.so[0xb7eea7eb]
/usr/lib/firefox/libmozjs.so(JS_EvaluateUCScriptForPrincipals+0x9e)[0xb7ea9a5e]
/usr/lib/firefox/components/libgklayout.so[0xb5b5395d]
/usr/lib/firefox/components/libgklayout.so[0xb5a30e1a]
/usr/lib/firefox/components/libgklayout.so[0xb5a31f27]
/usr/lib/firefox/components/libgklayout.so[0xb5a334f1]
/usr/lib/firefox/components/libgklayout.so[0xb5a335dc]
/usr/lib/firefox/components/libgklayout.so[0xb5aba8e0]
/usr/lib/firefox/components/libgklayout.so[0xb5abab26]
/usr/lib/firefox/components/libgklayout.so[0xb5a1cdc0]
/usr/lib/firefox/components/libgklayout.so[0xb5ae08fb]
/usr/lib/firefox/components/libgklayout.so[0xb5ae0cea]
/usr/lib/firefox/components/libhtmlpars.so[0xb4856549]
/usr/lib/firefox/components/libhtmlpars.so[0xb4855eec]
/usr/lib/firefox/components/libhtmlpars.so[0xb48560d2]
/usr/lib/firefox/components/libhtmlpars.so[0xb4859e71]
/usr/lib/firefox/components/libhtmlpars.so[0xb485a202]
/usr/lib/firefox/components/libhtmlpars.so[0xb485a722]
/usr/lib/firefox/components/libhtmlpars.so[0xb48572e4]
/usr/lib/firefox/components/libhtmlpars.so[0xb486c254]
/usr/lib/firefox/components/libhtmlpars.so[0xb486f1ca]
/usr/lib/firefox/components/libhtmlpars.so[0xb486e22a]
/usr/lib/firefox/components/libhtmlpars.so[0xb486b4e5]
/usr/lib/firefox/components/libgklayout.so[0xb59099d1]
/usr/lib/firefox/components/libgklayout.so[0xb5909e7c]
/usr/lib/firefox/components/libgklayout.so[0xb590a0e2]
/usr/lib/firefox/components/libnecko.so[0xb70f7839]
/usr/lib/firefox/components/libnecko.so[0xb713167c]
/usr/lib/firefox/components/libnecko.so[0xb70d96e6]
/usr/lib/firefox/components/libnecko.so[0xb70da2de]
/usr/lib/firefox/libxpcom_core.so[0xb7e3f9f2]
/usr/lib/firefox/libxpcom_core.so(PL_HandleEvent+0x27)[0xb7e5c417]
/usr/lib/firefox/libxpcom_core.so(PL_ProcessPendingEvents+0x5b)[0xb7e5c72b]
/usr/lib/firefox/libxpcom_core.so[0xb7e5e67e]
/usr/lib/firefox/components/libwidget_gtk2.so[0xb678a6b5]
/usr/lib/libglib-2.0.so.0[0xb756340d]
/usr/lib/libglib-2.0.so.0(g_main_context_dispatch+0x182)[0xb7539df2]
/usr/lib/libglib-2.0.so.0[0xb753cdcf]
/usr/lib/libglib-2.0.so.0(g_main_loop_run+0x1a9)[0xb753d179]
/usr/lib/libgtk-x11-2.0.so.0(gtk_main+0xb4)[0xb7b79044]
/usr/lib/firefox/components/libwidget_gtk2.so[0xb678ab12]
/usr/lib/firefox/components/libtoolkitcomps.so[0xb66a3be2]
/usr/lib/firefox/firefox-bin[0x804f8d1]
/usr/lib/firefox/firefox-bin[0x804ab8f]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc)[0xb76acebc]
/usr/lib/firefox/firefox-bin[0x804aac1]
======= Memory map: ========
08048000-0805a000 r-xp 00000000 08:02 467191 /usr/lib/firefox/firefox-bin
0805a000-0805b000 rw-p 00012000 08:02 467191 /usr/lib/firefox/firefox-bin
0805b000-08b03000 rw-p 0805b000 00:00 0 [heap]
afdb6000-afddf000 r-xp 00000000 08:02 533822 /usr/lib/firefox/components/libgkplugin.so
afddf000-afde1000 rw-p 00028000 08:02 533822 /usr/lib/firefox/components/libgkplugin.so
afde1000-afe18000 r-xp 00000000 08:02 466855 /usr/lib/firefox/libnssckbi.so
afe18000-afe21000 rw-p 00037000 08:02 466855 /usr/lib/firefox/libnssckbi.so
afe21000-afe60000 r-xp 00000000 08:02 407906 /usr/lib/libfreebl3.so
afe60000-afe61000 rw-p 0003f000 08:02 407906 /usr/lib/libfreebl3.so
afe61000-afe62000 ---p afe61000 00:00 0
afe62000-b0662000 rw-p afe62000 00:00 0
b0662000-b06ad000 r-xp 00000000 08:02 407904 /usr/lib/libsoftokn3.so
b06ad000-b06b1000 rw-p 0004b000 08:02 407904 /usr/lib/libsoftokn3.so
b06b1000-b071e000 r-xp 00000000 08:02 407902 /usr/lib/libnss3.so
b071e000-b0723000 rw-p 0006d000 08:02 407902 /usr/lib/libnss3.so
b0723000-b074b000 r-xp 00000000 08:02 407905 /usr/lib/libssl3.so
b074b000-b074d000 rw-p 00027000 08:02 407905 /usr/lib/libssl3.so
b074d000-b076f000 r-xp 00000000 08:02 407903 /usr/lib/libsmime3.so
b076f000-b0771000 rw-p 00022000 08:02 407903 /usr/lib/libsmime3.so
b077b000-b07d6000 r-xp 00000000 08:02 533936 /usr/lib/firefox/components/libpipnss.so
b07d6000-b07da000 rw-p 0005b000 08:02 533936 /usr/lib/firefox/components/libpipnss.so
b07da000-b07fd000 r--p 00000000 08:02 257827 /usr/share/fonts/truetype/msttcorefonts/Verdana.ttf
b07fd000-b07fe000 ---p b07fd000 00:00 0
b07fe000-b0ffe000 rw-p b07fe000 00:00 0
b0ffe000-b0fff000 ---p b0ffe000 00:00 0
b0fff000-b17ff000 rw-p b0fff000 00:00 0
b17ff000-b1800000 ---p b17ff000 00:00 0
b1800000-b2021000 rw-p b1800000 00:00 0
b2021000-b2100000 ---p b2021000 00:00 0
b2105000-b2138000 r-xp 00000000 08:02 533780 /usr/lib/firefox/components/libmork.so
b2138000-b213b000 rw-p 00032000 08:02 Killed

ProblemType: Bug
Architecture: i386
Date: Thu May 24 13:56:09 2007
DistroRelease: Ubuntu 7.04
Package: firefox 2.0.0.3+1-0ubuntu2
PackageArchitecture: i386
SourcePackage: firefox
Uname: Linux sarvothma 2.6.20-15-generic #2 SMP Sun Apr 15 07:36:31 UTC 2007 i686 GNU/Linux