diff --git a/po/ChangeLog b/po/ChangeLog
index 4adc393..97bf695 100644
--- a/po/ChangeLog
+++ b/po/ChangeLog
@@ -1,3 +1,7 @@
+2008-05-11  Mike Massonnet <mmassonnet@xfce.org>
+
+	* ja.po: Update Japanese translation (Nobuhiro Iwamatsu)
+
 2008-05-10  Jari Rahkonen <jari.rahkonen@pp1.inet.fi>
 
 	* fi.po: Updated Finnish translation
diff --git a/po/ja.po b/po/ja.po
index 9b53d05..b9fd707 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -5,14 +5,16 @@
 # This file is distributed under the same license as
 #   the xfce4-taskmanager package.
 # Daichi Kawahata <daichi@xfce.org>, 2006.
+# Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2008.
+
 #
 msgid ""
 msgstr ""
 "Project-Id-Version: xfce4-taskmanager 0.4.0-rc1\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2008-05-09 14:30+0200\n"
-"PO-Revision-Date: 2006-04-01 17:57+0900\n"
-"Last-Translator: Daichi Kawahata <daichi@xfce.org>\n"
+"PO-Revision-Date: 2008-05-11 10:09+0900\n"
+"Last-Translator: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>\n"
 "Language-Team: Japanese <xfce-users-jp@ml.fdiary.net>\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
@@ -20,34 +22,34 @@ msgstr ""
 
 #: ../src/callbacks.c:65
 msgid "Really kill the task?"
-msgstr ""
+msgstr "本当にタスクを kill しますか？"
 
 #: ../src/callbacks.c:69
 msgid "Really terminate the task?"
-msgstr ""
+msgstr "本当にタスクを終了しますか？"
 
 #: ../src/functions.c:133
 #, c-format
 msgid "%d MB of %d MB used"
-msgstr ""
+msgstr "%2$d MB 中 %1$d MB 使用"
 
 #: ../src/functions.c:138
 #, c-format
 msgid "%0.0f %%"
-msgstr ""
+msgstr "%0.0f %%"
 
-#: ../src/interface.c:46 ../src/interface.c:334
-#, fuzzy
+#: ../src/interface.c:46
+#: ../src/interface.c:334
 msgid "Xfce4 Taskmanager"
-msgstr "xfce4-taskmanager"
+msgstr "xfce4 タスクマネージャ"
 
 #: ../src/interface.c:60
 msgid "Cpu usage"
-msgstr ""
+msgstr "CPU使用量"
 
 #: ../src/interface.c:68
 msgid "Memory usage"
-msgstr ""
+msgstr "メモリ使用量"
 
 #: ../src/interface.c:135
 msgid "Command"
@@ -79,12 +81,12 @@ msgstr "ユーザー"
 
 #: ../src/interface.c:178
 msgid "CPU%"
-msgstr ""
+msgstr "CPU%"
 
 #. my change
 #: ../src/interface.c:185
 msgid "Prio"
-msgstr ""
+msgstr "Prio"
 
 #: ../src/interface.c:202
 msgid "Stop"
@@ -104,7 +106,7 @@ msgstr "Kill"
 
 #: ../src/interface.c:222
 msgid "Priority"
-msgstr ""
+msgstr "優先度"
 
 #: ../src/interface.c:292
 msgid "Show user tasks"
@@ -120,10 +122,10 @@ msgstr "その他のタスクを表示"
 
 #: ../src/interface.c:307
 msgid "Show memory used by cache as free"
-msgstr ""
+msgstr "キャッシュが使うメモリを空きとして表示する"
 
 #~ msgid "xfce4-taskmanager"
 #~ msgstr "xfce4-taskmanager"
-
 #~ msgid "more details"
 #~ msgstr "さらに詳しく"
+