Firefox crashing

[Gianluca Sforna]

It seems that I can consistently crash my Firefox
(firefox-3.0-0.60.beta5.fc9.x86_64) just by fast switching between
tabs.

If I run firefox from the console I get:

which: no soundwrapper in
(/usr/lib64/qt-3.3/bin:/usr/kerberos/bin:/usr/lib64/ccache:/usr/local/bin:/usr/bin:/bin:/sbin:/home/giallu/bin:/usr/sbin)
which: no soundwrapper in
(/usr/lib64/qt-3.3/bin:/usr/kerberos/bin:/usr/lib64/ccache:/usr/local/bin:/usr/bin:/bin:/sbin:/home/giallu/bin:/usr/sbin)
Gtk-Message: Failed to load module "gnomebreakpad":
libgnomebreakpad.so: cannot open shared object file: No such file or
directory

(npviewer.bin:22267): Gtk-WARNING **: Unable to locate theme engine in
module_path: "nodoka",

(npviewer.bin:22267): Gtk-WARNING **: Unable to locate theme engine in
module_path: "nodoka",
/usr/lib64/firefox-3.0b5/run-mozilla.sh: line 131: 22212 Segmentation
fault      (core dumped) "$prog" ${1+"$@"}

and I've got some gdb backtrace (I can give more if needed):

Program received signal SIGSEGV, Segmentation fault.
js_GetStringBytes (cx=<value optimized out>, str=<value optimized out>)
    at jsstr.c:3207
3207	    if (!rt->deflatedStringCacheLock) {
(gdb) bt
#0  js_GetStringBytes (cx=<value optimized out>, str=<value optimized out>)
    at jsstr.c:3207
#1  0x0000003ccd6171ed in JS_GetStringBytes (str=<value optimized out>)
    at jsapi.c:5304
#2  0x000000337c2b849e in jsdScript (this=<value optimized out>,
    aCx=<value optimized out>, aScript=<value optimized out>)
    at jsd_xpc.cpp:992
#3  0x000000337c2b9c4f in jsdScript::FromPtr (aCx=<value optimized out>,
    aScript=<value optimized out>) at jsd_xpc.h:155
#4  0x000000337c2b86fc in jsdService::EnumerateScripts (
    this=<value optimized out>, enumerator=<value optimized out>)
    at jsd_xpc.cpp:2712
#5  0x000000337c421fd4 in NS_InvokeByIndex_P (that=<value optimized out>,
    methodIndex=<value optimized out>, paramCount=<value optimized out>,
    params=<value optimized out>) at xptcinvoke_x86_64_linux.cpp:208
#6  0x000000337bc4b4ef in XPCWrappedNative::CallMethod (
    ccx=<value optimized out>, mode=<value optimized out>)
    at xpcwrappednative.cpp:2369
#7  0x000000337bc53c0b in XPC_WN_CallMethod (cx=<value optimized out>,
    obj=<value optimized out>, argc=<value optimized out>,
    argv=<value optimized out>, vp=<value optimized out>)
    at xpcwrappednativejsops.cpp:1470
#8  0x0000003ccd64bf17 in js_Invoke (cx=<value optimized out>,
---Type <return> to continue, or q <return> to quit---
    argc=<value optimized out>, vp=<value optimized out>,
    flags=<value optimized out>) at jsinterp.c:1287
#9  0x0000003ccd63f258 in js_Interpret (cx=0x36a35f0) at jsinterp.c:4841
#10 0x0000003ccd64bf7f in js_Invoke (cx=<value optimized out>,
    argc=<value optimized out>, vp=<value optimized out>,
    flags=<value optimized out>) at jsinterp.c:1303




Before going the bugzilla route I would like to know if some of you is
experiencing the same but also opinions about why nspluginwrapper is
not protecting me from that...

TIA

Gianluca