How to clear Acroread defunct process in Linux?

Acrobat Reader plugin works fine for first document, but if I close the pdf window and wait ~20 seconds, the Acroread process goes defunct and further attempts to read pdf docs do not display (blank screen). Have tried disabling all other plugins and many extensions. Killing nspluginwrapper manually allows proper pdf reading (for one more doc). This has been going on for a number of Firefox releases.
ps info:
11976 ? Sl 0:00 \_ /usr/lib/firefox-7.0.1/plugin-container /usr/lib/nspluginwrapper/plugins/npwrapper.nppdf.so -greomni /usr/lib/firefox-7.0.1/omni.jar 11767 true plugin
11989 ? S 0:01 \_ /usr/lib/nspluginwrapper/i386/linux/npviewer.bin --plugin /opt/Adobe/Reader9/Browser/intellinux/nppdf.so --connection /org/wrapper/NSPlugins/nppdf.so/11976-2
12000 ? Z 0:01 \_ [acroread] <defunct>
The question: Is there something that can be done to fix the problem in Firefox or is it purely an Adobe problem?

I remember this has been a problem since Ubuntu 9.10 (maybe). It seems that Firefox 3.0+ has a non-robust interface with Adobe PDF reader. Chrome doesn't have this problem on Linux. So I guess the problem is in the plug-inn wrapper. I think Firefox team need to fix this problem ASAP.

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create or replace and compile java source named wcsmsg as
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Hi All,
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I am not sure which version of Unix are you on? Make sure you have all the
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*& Thread: how to clear the text in the Text Editor
*& <a class="jive_macro jive_macro_thread" href="" __jive_macro_name="thread" modifiedtitle="true" __default_attr="1145272"></a>
*& By default the itab GT_OUTTAB contains texts in DE and EN.
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TYPES: text     TYPE ty_t_text.
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TYPES: ty_t_outtab    TYPE STANDARD TABLE OF ty_s_outtab
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DATA: gd_language     TYPE spras.
DATA: go_docking      TYPE REF TO cl_gui_docking_container,
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DATA: gd_okcode       TYPE ui_func,
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gd_repid = syst-repid.
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      repid                       = gd_repid
      dynnr                       = '0100'
*      CONTAINER                   =
    EXCEPTIONS
      OTHERS                      = 4.
IF sy-subrc NE 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
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"       ok-code => GD_OKCODE
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*PROCESS BEFORE OUTPUT.
* MODULE STATUS_0100.
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*       text
* --> p1        text
* <-- p2        text
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APPEND gs_outtab TO gt_outtab.
gs_outtab-language = 'FR'. REFRESH: gs_outtab-text.
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*      dynnr                       =
*      side                        = dock_at_left
*      extension                   = 50
*      style                       =
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*      caption                     =
*      metric                      = 0
      ratio                       = 90
*      no_autodef_progid_dynnr     =
*      name                        =
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      cntl_system_error           = 2
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*      style                  = 0
*      wordwrap_mode          = wordwrap_at_windowborder
*      wordwrap_position      = -1
*      wordwrap_to_linebreak_mode = false
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*      name                   =
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*       text
* --> p1        text
* <-- p2        text
FORM set_text_editor .
BREAK-POINT.
CLEAR: gs_outtab.
READ TABLE gt_outtab INTO gs_outtab
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*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
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ENDIF.
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* <-- p2        text
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      only_when_modified     = cl_gui_textedit=>true
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*      is_modified            =
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      error_dp               = 1
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IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
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Regards
Uwe

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