diff --git a/setup/iso_639/ar.po b/setup/iso_639/ar.po
index 4fa51be7bd..7487b277fd 100644
--- a/setup/iso_639/ar.po
+++ b/setup/iso_639/ar.po
@@ -10,15 +10,18 @@ msgstr ""
 "Report-Msgid-Bugs-To: Debian iso-codes team <pkg-isocodes-"
 "devel@lists.alioth.debian.org>\n"
 "POT-Creation-Date: 2011-11-25 14:01+0000\n"
-"PO-Revision-Date: 2011-08-27 05:57+0000\n"
-"Last-Translator: Mohammad Gamal <f2c2001@yahoo.com>\n"
-"Language-Team: Arabic <support@arabeyes.org>\n"
+"PO-Revision-Date: 2013-04-15 10:56+0000\n"
+"Last-Translator: LADHARI <nader.ladhari@gmail.com>\n"
+"Language-Team: awadh alghaamdi <awadh_al_ghaamdi@hotmail.com>\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"X-Launchpad-Export-Date: 2011-11-26 05:06+0000\n"
-"X-Generator: Launchpad (build 14381)\n"
+"X-Launchpad-Export-Date: 2013-04-16 04:37+0000\n"
+"X-Generator: Launchpad (build 16564)\n"
+"X-Poedit-Country: SAUDI ARABIA\n"
 "Language: ar\n"
+"X-Poedit-Language: Arabic\n"
+"X-Poedit-SourceCharset: utf-8\n"
 
 #. name for aaa
 msgid "Ghotuo"
@@ -66,7 +69,7 @@ msgstr ""
 
 #. name for aam
 msgid "Aramanik"
-msgstr ""
+msgstr "ارامانيك"
 
 #. name for aan
 msgid "Anambé"
@@ -110,7 +113,7 @@ msgstr ""
 
 #. name for aaz
 msgid "Amarasi"
-msgstr ""
+msgstr "أماراسي"
 
 #. name for aba
 msgid "Abé"
@@ -294,7 +297,7 @@ msgstr ""
 
 #. name for acx
 msgid "Arabic; Omani"
-msgstr ""
+msgstr "عماني"
 
 #. name for acy
 msgid "Arabic; Cypriot"
diff --git a/src/calibre/translations/pl.po b/src/calibre/translations/pl.po
index 7e64eb36e5..8fd4daace2 100644
--- a/src/calibre/translations/pl.po
+++ b/src/calibre/translations/pl.po
@@ -8,15 +8,15 @@ msgstr ""
 "Project-Id-Version: calibre\n"
 "Report-Msgid-Bugs-To: FULL NAME <EMAIL@ADDRESS>\n"
 "POT-Creation-Date: 2013-04-12 05:42+0000\n"
-"PO-Revision-Date: 2013-04-06 15:11+0000\n"
-"Last-Translator: Piotr Parafiniuk <Unknown>\n"
+"PO-Revision-Date: 2013-04-15 12:23+0000\n"
+"Last-Translator: Arkadiusz Szergowski <settifusion@gmail.com>\n"
 "Language-Team: Polish <pl@li.org>\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=3; plural=n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 "
 "|| n%100>=20) ? 1 : 2;\n"
-"X-Launchpad-Export-Date: 2013-04-13 05:23+0000\n"
+"X-Launchpad-Export-Date: 2013-04-16 04:36+0000\n"
 "X-Generator: Launchpad (build 16564)\n"
 "X-Poedit-Bookmarks: -1,3588,-1,-1,-1,-1,-1,-1,-1,-1\n"
 
@@ -5132,6 +5132,8 @@ msgstr "Źródło metadanych"
 msgid ""
 "Downloads multiple book covers from Amazon. Useful to find alternate covers."
 msgstr ""
+"Pobiera wiele okładek z Amazonu. Przydatne przy wyszukiwaniu alternatywnych "
+"okładek."
 
 #: /home/kovid/work/calibre/src/calibre/ebooks/metadata/sources/big_book_search.py:33
 msgid "Configure the Big Book Search plugin"
@@ -5144,7 +5146,7 @@ msgstr "Maksymalna liczba okładek do pobrania"
 
 #: /home/kovid/work/calibre/src/calibre/ebooks/metadata/sources/big_book_search.py:36
 msgid "The maximum number of covers to process from the search result"
-msgstr ""
+msgstr "Maksymalna liczba okładek przetwarzanych w czasie przeszukiwania"
 
 #: /home/kovid/work/calibre/src/calibre/ebooks/metadata/sources/douban.py:155
 msgid ""
@@ -8311,7 +8313,7 @@ msgstr "Zapisz format %s na dysk"
 #: /home/kovid/work/calibre/src/calibre/gui2/book_details.py:487
 #, python-format
 msgid "Restore the %s format"
-msgstr ""
+msgstr "Przywróć format %s"
 
 #: /home/kovid/work/calibre/src/calibre/gui2/catalog/catalog_bibtex.py:16
 msgid "BibTeX Options"
@@ -22650,7 +22652,7 @@ msgstr ""
 
 #: /home/kovid/work/calibre/src/calibre/library/cli.py:448
 msgid "Do not replace the format if it already exists"
-msgstr ""
+msgstr "Nie zamieniaj formatu jeśli istnieje"
 
 #: /home/kovid/work/calibre/src/calibre/library/cli.py:458
 msgid "You must specify an id and an ebook file"