Steps to reproduce:
1.Launch Mozilla1.2.1_05 on redhat linux8.0 with jre1.4.2_b18.
2.Open
http://sceri.prc/desktop/Browser/QA/Test_Case/java/bugs/bugzilla/131295/test.html
3.When the alert display ,click "ok", after third alert display , the mozilla crash.
Trace information as following:
Plugin: CSecureJNIEnv CSecureJNIEnv::CallStaticMethod

Plugin: remotejni: Entering jni_SecureCallStaticMethod()
Plugin: jni_SecureCallStaticMethod env=8837268 type=1101679720
clazz=81DBF74 methodID=8933438 args=893CEE0 ctx=87CC2C8
Plugin: remotejni: Entering getAndPackSecurityInfo
Plugin: getAndPackSecurityInfo
         ctx=87CC2C8
         origin=http://sceri.prc
         UniversalBrowserRead=0 UniversalJavaPerm=0
Plugin: remotejni: Exiting getAndPackSecurityInfo
Plugin: remotejni: Entering handle_response()

Plugin: 837 remotejni:handle_response() PLUGIN_RETURN
Plugin: remotejni: Exiting jni_SecureCallStaticMethod()
Plugin: remotejni: Entering handle_response()

Plugin: 839 remotejni:handle_response() PLUGIN_RETURN
Plugin: remotejni: Entering handle_response()

Plugin: 840 remotejni:handle_response() PLUGIN_RETURN
Plugin: remotejni: Entering handle_response()

Plugin: 842 remotejni:handle_response() PLUGIN_RETURN
Plugin: remotejni: Entering handle_response()

Plugin: 843 remotejni:handle_response() PLUGIN_RETURN
Plugin: CSecureJNIEnv CSecureJNIEnv::CallMethod

Plugin: remotejni: Entering jni_SecureCallMethod()
Plugin: jni_SecureCallMethod(): env=8837268 type=int obj=82719C8
         method=88933F0 args=0 ctx=8865298
Plugin: remotejni: Entering getAndPackSecurityInfo
Plugin: getAndPackSecurityInfo
         ctx=8865298
         origin=http://sceri.prc
         UniversalBrowserRead=0 UniversalJavaPerm=0
Plugin: remotejni: Exiting getAndPackSecurityInfo
Plugin: remotejni: Entering handle_response()

Plugin: 845 remotejni:handle_response() PLUGIN_RETURN
Plugin: remotejni: Exiting jni_SecureCallMethod()
Plugin: CSecureJNIEnv CSecureJNIEnv::CallMethod

Plugin: remotejni: Entering jni_SecureCallMethod()
Plugin: jni_SecureCallMethod(): env=8837268 type=jobject obj=82719C8
         method=853DE20 args=0 ctx=8865298
Plugin: remotejni: Entering getAndPackSecurityInfo
Plugin: getAndPackSecurityInfo
         ctx=8865298
         origin=http://sceri.prc
         UniversalBrowserRead=0 UniversalJavaPerm=0
Plugin: remotejni: Exiting getAndPackSecurityInfo
Plugin: remotejni: Entering handle_response()

Plugin: 846 remotejni:handle_response() PLUGIN_RETURN
Plugin: remotejni: Exiting jni_SecureCallMethod()
Plugin: CSecureJNIEnv CSecureJNIEnv::CallMethod

Plugin: remotejni: Entering jni_SecureCallMethod()
Plugin: jni_SecureCallMethod(): env=8837268 type=jobject obj=82719C8
         method=846BAB8 args=0 ctx=87F63B0
Plugin: remotejni: Entering getAndPackSecurityInfo
Plugin: getAndPackSecurityInfo
         ctx=87F63B0
         origin=http://sceri.prc
         UniversalBrowserRead=0 UniversalJavaPerm=0
Plugin: remotejni: Exiting getAndPackSecurityInfo
Plugin: remotejni: Entering handle_response()

Plugin: 850 remotejni:handle_response() PLUGIN_RETURN
Plugin: remotejni: Exiting jni_SecureCallMethod()
Plugin: CSecureJNIEnv CSecureJNIEnv::CallStaticMethod

Plugin: remotejni: Entering jni_SecureCallStaticMethod()
Plugin: jni_SecureCallStaticMethod env=8837268 type=1101679720
clazz=81DBF74 methodID=8933438 args=873A378 ctx=87F63B0
Plugin: remotejni: Entering getAndPackSecurityInfo
Plugin: getAndPackSecurityInfo
         ctx=87F63B0
         origin=http://sceri.prc
         UniversalBrowserRead=0 UniversalJavaPerm=0
Plugin: remotejni: Exiting getAndPackSecurityInfo
Plugin: remotejni: Entering handle_response()

Plugin: 854 remotejni:handle_response() PLUGIN_RETURN
Plugin: remotejni: Exiting jni_SecureCallStaticMethod()
Plugin: remotejni: Entering handle_response()

Plugin: 856 remotejni:handle_response() PLUGIN_RETURN
Plugin: CSecureJNIEnv CSecureJNIEnv::CallStaticMethod

Plugin: remotejni: Entering jni_SecureCallStaticMethod()
Plugin: jni_SecureCallStaticMethod env=883
###@###.### 10/20/04 05:36 GMT