another site not working not working with firefox, icedtea plugin and AMD64 arch:

https://www.elsteronline.de/eportal/eop/auth/AuthentisierungDispatcher.tax?sicherheitsverfahren=0

console output: 
GCJ PLUGIN: thread 0x6195c0: NP_Initialize
GCJ PLUGIN: thread 0x6195c0: plugin_test_appletviewer
GCJ PLUGIN: thread 0x6195c0: plugin_test_appletviewer return
GCJ PLUGIN: thread 0x6195c0: NP_Initialize: using /usr/lib/jvm/java-7-icedtea/jre/lib/amd64/../../bin/pluginappletviewer
GCJ PLUGIN: thread 0x6195c0: NP_Initialize return
GCJ PLUGIN: thread 0x6195c0: GCJ_New
GCJ PLUGIN: thread 0x6195c0: plugin_data_new
GCJ PLUGIN: thread 0x6195c0: plugin_data_new return
GCJ PLUGIN: thread 0x6195c0: plugin_get_documentbase
GCJ PLUGIN: thread 0x6195c0: plugin_get_documentbase return
GCJ PLUGIN: thread 0x6195c0: GCJ_New: creating input fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-appletviewer-to-plugin
GCJ PLUGIN: thread 0x6195c0: GCJ_New: created input fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-appletviewer-to-plugin
GCJ PLUGIN: thread 0x6195c0: GCJ_New: creating output fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-plugin-to-appletviewer
GCJ PLUGIN: thread 0x6195c0: GCJ_New: created output fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-plugin-to-appletviewer
GCJ PLUGIN: thread 0x6195c0: plugin_start_appletviewer
GCJ PLUGIN: thread 0x6195c0: plugin_start_appletviewer return
GCJ PLUGIN: thread 0x6195c0: GCJ_New: got confirmation that appletviewer is running.
GCJ PLUGIN: thread 0x6195c0: plugin_create_applet_tag
GCJ PLUGIN: thread 0x6195c0: plugin_create_applet_tag return
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer
  PIPE: plugin wrote: instance-10462-0
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer return
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer
  PIPE: plugin wrote: tag https://www.elsteronline.de/eportal/KonfigurationsAssistentSwitch.tax?RequestKeys.KONFIGURATIONS_ASSISTENT_WORKFLOW=Y9jwqYDWdCr3YdU&schritt=2&javascript=1&jre=1.1&jre=1.1.1&jre=1.1.2&jre=1.1.3&jre=1.2&jre=1.2.1&jre=1.2.2&jre=1.3&jre=1.3.1&jre=1.4&jre=1.4.1&jre=1.4.2&jre=1.5&jre=1.6&jre=1.7&jre=1.7.0_00 <EMBED CODE="de.elster.portal.applet.ElsterAppletAnalyze.class" CODEBASE="/eportal/applet" ARCHIVE="ElsterAppletAnalyze.jar" HEIGHT="0" WIDTH="0" ><PARAM NAME="type" VALUE="application/x-java-applet;version=1.3"><PARAM NAME="name" VALUE="elsteranalyze"><PARAM NAME="scriptable" VALUE="false"><PARAM NAME="sessionid" VALUE="c0a8041630e1ba796df200f546629139d17dbfafb8a3.e3qKa3eKbNuLe3aKa3uSah4Nay0"><PARAM NAME="clientredirect" VALUE="/eportal/KonfigurationsAssistent.tax"><PARAM NAME="modus" VALUE="normal"><PARAM NAME="workflow" VALUE="Y9jwqYDWdCr3YdU"><PARAM NAME="portalauspraegung" VALUE="eop"><PARAM NAME="clientlog" VALUE="aus"><PARAM NAME="cookiesenabled" VALUE="an"></EMBED>
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer return
GCJ PLUGIN: thread 0x6195c0: GCJ_New return
GCJ PLUGIN: thread 0x6195c0: NP_GetValue
GCJ PLUGIN: thread 0x6195c0: NP_GetValue: returning plugin description.
GCJ PLUGIN: thread 0x6195c0: NP_GetValue return
GCJ PLUGIN: thread 0x6195c0: GCJ_GetValue
GCJ PLUGIN: thread 0x6195c0: GCJ_GetValue: returning TRUE for NeedsXEmbed.
GCJ PLUGIN: thread 0x6195c0: GCJ_GetValue return
  PIPE: appletviewer wrote: running
  PIPE: appletviewer read: instance-10462-0
  PIPE: appletviewer read: tag https://www.elsteronline.de/eportal/KonfigurationsAssistentSwitch.tax?RequestKeys.KONFIGURATIONS_ASSISTENT_WORKFLOW=Y9jwqYDWdCr3YdU&schritt=2&javascript=1&jre=1.1&jre=1.1.1&jre=1.1.2&jre=1.1.3&jre=1.2&jre=1.2.1&jre=1.2.2&jre=1.3&jre=1.3.1&jre=1.4&jre=1.4.1&jre=1.4.2&jre=1.5&jre=1.6&jre=1.7&jre=1.7.0_00 <EMBED CODE="de.elster.portal.applet.ElsterAppletAnalyze.class" CODEBASE="/eportal/applet" ARCHIVE="ElsterAppletAnalyze.jar" HEIGHT="0" WIDTH="0" ><PARAM NAME="type" VALUE="application/x-java-applet;version=1.3"><PARAM NAME="name" VALUE="elsteranalyze"><PARAM NAME="scriptable" VALUE="false"><PARAM NAME="sessionid" VALUE="c0a8041630e1ba796df200f546629139d17dbfafb8a3.e3qKa3eKbNuLe3aKa3uSah4Nay0"><PARAM NAME="clientredirect" VALUE="/eportal/KonfigurationsAssistent.tax"><PARAM NAME="modus" VALUE="normal"><PARAM NAME="workflow" VALUE="Y9jwqYDWdCr3YdU"><PARAM NAME="portalauspraegung" VALUE="eop"><PARAM NAME="clientlog" VALUE="aus"><PARAM NAME="cookiesenabled" VALUE="an"></EMBED>
GCJ PLUGIN: thread 0x6195c0: GCJ_Destroy
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer
  PIPE: plugin wrote: destroy
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer return
GCJ PLUGIN: thread 0x6195c0: plugin_stop_appletviewer
GCJ PLUGIN: thread 0x6195c0: plugin_stop_appletviewer return
GCJ PLUGIN: thread 0x6195c0: plugin_data_destroy
GCJ PLUGIN: thread 0x6195c0: GCJ_New: deleting output fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-plugin-to-appletviewer
GCJ PLUGIN: thread 0x6195c0: GCJ_New: deleted output fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-plugin-to-appletviewer
GCJ PLUGIN: thread 0x6195c0: GCJ_New: deleting input fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-appletviewer-to-plugin
GCJ PLUGIN: thread 0x6195c0: GCJ_New: deleted input fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-appletviewer-to-plugin
GCJ PLUGIN: thread 0x6195c0: plugin_data_destroy return
GCJ PLUGIN: thread 0x6195c0: GCJ_Destroy return
GCJ PLUGIN: thread 0x6195c0: NP_Shutdown
GCJ PLUGIN: thread 0x6195c0: NP_Shutdown return
  PIPE: appletviewer read: destroy
  PIPE: appletviewer read: shutdown
APPLETVIEWER: exiting appletviewer
GCJ PLUGIN: thread 0x6195c0: NP_Initialize
GCJ PLUGIN: thread 0x6195c0: plugin_test_appletviewer
GCJ PLUGIN: thread 0x6195c0: plugin_test_appletviewer return
GCJ PLUGIN: thread 0x6195c0: NP_Initialize: using /usr/lib/jvm/java-7-icedtea/jre/lib/amd64/../../bin/pluginappletviewer
GCJ PLUGIN: thread 0x6195c0: NP_Initialize return
GCJ PLUGIN: thread 0x6195c0: GCJ_New
GCJ PLUGIN: thread 0x6195c0: plugin_data_new
GCJ PLUGIN: thread 0x6195c0: plugin_data_new return
GCJ PLUGIN: thread 0x6195c0: plugin_get_documentbase
GCJ PLUGIN: thread 0x6195c0: plugin_get_documentbase return
GCJ PLUGIN: thread 0x6195c0: GCJ_New: creating input fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-appletviewer-to-plugin
GCJ PLUGIN: thread 0x6195c0: GCJ_New: created input fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-appletviewer-to-plugin
GCJ PLUGIN: thread 0x6195c0: GCJ_New: creating output fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-plugin-to-appletviewer
GCJ PLUGIN: thread 0x6195c0: GCJ_New: created output fifo: /home/max/.gcjwebplugin/gcj-instance-10462-0-plugin-to-appletviewer
GCJ PLUGIN: thread 0x6195c0: plugin_start_appletviewer
GCJ PLUGIN: thread 0x6195c0: plugin_start_appletviewer return
GCJ PLUGIN: thread 0x6195c0: GCJ_New: got confirmation that appletviewer is running.
  PIPE: appletviewer wrote: running
GCJ PLUGIN: thread 0x6195c0: plugin_create_applet_tag
GCJ PLUGIN: thread 0x6195c0: plugin_create_applet_tag return
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer
  PIPE: plugin wrote: instance-10462-0
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer return
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer
  PIPE: plugin wrote: tag https://www.elsteronline.de/eportal/eop/auth/AuthentisierungDispatcher.tax?sicherheitsverfahren=0 <EMBED CODE="de.elster.portal.applet.ElsterAppletLoginSoftPSE.class" CODEBASE="/eportal/applet" ARCHIVE="ElsterAppletLoginSoftPSE.jar" HEIGHT="150" WIDTH="540" ><PARAM NAME="id" VALUE="defaultFocusObject"><PARAM NAME="type" VALUE="application/x-java-applet;version=1.4"><PARAM NAME="name" VALUE="elsterlogin"><PARAM NAME="cache_option" VALUE="plugin"><PARAM NAME="cache_archive" VALUE="applethelper.jar,clientlog.jar,esicl_jre15.jar,IXSIL-1.2.2.2.jar,iaik_min.jar,xmlrpc.jar,codec.jar"><PARAM NAME="loglevel" VALUE="7"><PARAM NAME="progressbar" VALUE="true"><PARAM NAME="boxmessage" VALUE="Laden..."><PARAM NAME="boxbgcolor" VALUE="#FFFFFF"><PARAM NAME="boxfgcolor" VALUE="#000000"><PARAM NAME="progresscolor" VALUE="#FFFFFF"><PARAM NAME="tokenid" VALUE="0"><PARAM NAME="contextroot" VALUE="eportal"><PARAM NAME="portalauspraegung" VALUE="eop"><PARAM NAME="os" VALUE="4"><PARAM NAME="sessionid" VALUE="c0a8041630e1ba796df200f546629139d17dbfafb8a3.e3qKa3eKbNuLe3aKa3uSah4Nay0"><PARAM NAME="sessionticket" VALUE="2000015419586500507"><PARAM NAME="servertimestamp" VALUE="02.11.2007 11:35:59"><PARAM NAME="scriptable" VALUE="false "><PARAM NAME="pluginspage" VALUE="http://java.sun.com/products/plugin/index.html#download"></EMBED>
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer return
GCJ PLUGIN: thread 0x6195c0: GCJ_New return
  PIPE: appletviewer read: instance-10462-0
  PIPE: appletviewer read: tag https://www.elsteronline.de/eportal/eop/auth/AuthentisierungDispatcher.tax?sicherheitsverfahren=0 <EMBED CODE="de.elster.portal.applet.ElsterAppletLoginSoftPSE.class" CODEBASE="/eportal/applet" ARCHIVE="ElsterAppletLoginSoftPSE.jar" HEIGHT="150" WIDTH="540" ><PARAM NAME="id" VALUE="defaultFocusObject"><PARAM NAME="type" VALUE="application/x-java-applet;version=1.4"><PARAM NAME="name" VALUE="elsterlogin"><PARAM NAME="cache_option" VALUE="plugin"><PARAM NAME="cache_archive" VALUE="applethelper.jar,clientlog.jar,esicl_jre15.jar,IXSIL-1.2.2.2.jar,iaik_min.jar,xmlrpc.jar,codec.jar"><PARAM NAME="loglevel" VALUE="7"><PARAM NAME="progressbar" VALUE="true"><PARAM NAME="boxmessage" VALUE="Laden..."><PARAM NAME="boxbgcolor" VALUE="#FFFFFF"><PARAM NAME="boxfgcolor" VALUE="#000000"><PARAM NAME="progresscolor" VALUE="#FFFFFF"><PARAM NAME="tokenid" VALUE="0"><PARAM NAME="contextroot" VALUE="eportal"><PARAM NAME="portalauspraegung" VALUE="eop"><PARAM NAME="os" VALUE="4"><PARAM NAME="sessionid" VALUE="c0a8041630e1ba796df200f546629139d17dbfafb8a3.e3qKa3eKbNuLe3aKa3uSah4Nay0"><PARAM NAME="sessionticket" VALUE="2000015419586500507"><PARAM NAME="servertimestamp" VALUE="02.11.2007 11:35:59"><PARAM NAME="scriptable" VALUE="false "><PARAM NAME="pluginspage" VALUE="http://java.sun.com/products/plugin/index.html#download"></EMBED>
GCJ PLUGIN: thread 0x6195c0: NP_GetValue
GCJ PLUGIN: thread 0x6195c0: NP_GetValue: returning plugin description.
GCJ PLUGIN: thread 0x6195c0: NP_GetValue return
GCJ PLUGIN: thread 0x6195c0: GCJ_GetValue
GCJ PLUGIN: thread 0x6195c0: GCJ_GetValue: returning TRUE for NeedsXEmbed.
GCJ PLUGIN: thread 0x6195c0: GCJ_GetValue return
GCJ PLUGIN: thread 0x6195c0: GCJ_SetWindow
GCJ PLUGIN: thread 0x6195c0: GCJ_SetWindow: setting window.
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer
  PIPE: plugin wrote: instance-10462-0
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer return
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer
  PIPE: plugin wrote: handle 54541087
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer return
GCJ PLUGIN: thread 0x6195c0: GCJ_SetWindow return
GCJ PLUGIN: thread 0x6195c0: GCJ_SetWindow
GCJ PLUGIN: thread 0x6195c0: GCJ_SetWindow: window already exists.
GCJ PLUGIN: thread 0x6195c0: GCJ_SetWindow: window width changed.
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer
  PIPE: plugin wrote: instance-10462-0
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer return
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer
  PIPE: plugin wrote: width 540
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer return
GCJ PLUGIN: thread 0x6195c0: GCJ_SetWindow: window height changed.
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer
  PIPE: plugin wrote: instance-10462-0
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer return
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer
  PIPE: plugin wrote: height 150
GCJ PLUGIN: thread 0x6195c0: plugin_send_message_to_appletviewer return
GCJ PLUGIN: thread 0x6195c0: GCJ_SetWindow return
  PIPE: appletviewer read: instance-10462-0
  PIPE: appletviewer read: handle 54541087
GCJ PLUGIN: thread 0x6195c0: GCJ_GetValue
gcjwebplugin.cc:555: thread 0x6195c0: Error: Unknown plugin value requested.
GCJ PLUGIN: thread 0x6195c0: GCJ_GetValue return
GCJ PLUGIN: thread 0x6195c0: GCJ_GetValue
gcjwebplugin.cc:555: thread 0x6195c0: Error: Unknown plugin value requested.
GCJ PLUGIN: thread 0x6195c0: GCJ_GetValue return
#
# An unexpected error has been detected by Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00002b28c60d3e11, pid=10551, tid=1074792784
#
# Java VM: IcedTea 64-Bit Server VM (1.7.0-b21 mixed mode linux-amd64)
# Problematic frame:
# V  [libjvm.so+0x5c9e11]
#
# An error report file with more information is saved as:
# /home/max/programs/Songbird/hs_err_pid10551.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#
GCJ PLUGIN: thread 0x6195c0: plugin_out_pipe_callback
GCJ PLUGIN: thread 0x6195c0: plugin_out_pipe_callback: appletviewer has stopped.
GCJ PLUGIN: thread 0x6195c0: plugin_out_pipe_callback return
GCJ PLUGIN: thread 0x6195c0: plugin_in_pipe_callback
GCJ PLUGIN: thread 0x6195c0: appletviewer has stopped.
GCJ PLUGIN: thread 0x6195c0: plugin_in_pipe_callback return