diff -Nru python-poppler-0.12.1/debian/changelog python-poppler-0.12.1/debian/changelog
--- python-poppler-0.12.1/debian/changelog	2011-09-02 12:33:38.000000000 +0000
+++ python-poppler-0.12.1/debian/changelog	2012-04-03 23:08:57.000000000 +0000
@@ -1,3 +1,10 @@
+python-poppler (0.12.1-4ubuntu1+ppa0) oneiric; urgency=low
+
+  * Release the GIL on blocking functions like rendering pages and
+    getting thumbnails
+
+ -- logari81 <logari81@gmail.com>  Wed, 04 Apr 2012 01:08:13 +0200
+
 python-poppler (0.12.1-4ubuntu1) oneiric; urgency=low
 
   * Build-depend on libxcb-util0-dev instead of libxcb-render-util0-dev.
diff -Nru python-poppler-0.12.1/debian/patches/debian-changes-0.12.1-4ubuntu1+ppa0 python-poppler-0.12.1/debian/patches/debian-changes-0.12.1-4ubuntu1+ppa0
--- python-poppler-0.12.1/debian/patches/debian-changes-0.12.1-4ubuntu1+ppa0	1970-01-01 00:00:00.000000000 +0000
+++ python-poppler-0.12.1/debian/patches/debian-changes-0.12.1-4ubuntu1+ppa0	2012-04-03 23:09:45.000000000 +0000
@@ -0,0 +1,67 @@
+Description: Upstream changes introduced in version 0.12.1-4ubuntu1+ppa0
+ This patch has been created by dpkg-source during the package build.
+ Here's the last changelog entry, hopefully it gives details on why
+ those changes were made:
+ .
+ python-poppler (0.12.1-4ubuntu1+ppa0) oneiric; urgency=low
+ .
+   * Release the GIL on blocking functions like rendering pages and
+     getting thumbnails
+ .
+ The person named in the Author field signed this changelog entry.
+Author: logari81 <logari81@gmail.com>
+
+---
+The information above should follow the Patch Tagging Guidelines, please
+checkout http://dep.debian.net/deps/dep3/ to learn about the format. Here
+are templates for supplementary fields that you might want to add:
+
+Origin: <vendor|upstream|other>, <url of original patch>
+Bug: <url in upstream bugtracker>
+Bug-Debian: http://bugs.debian.org/<bugnumber>
+Bug-Ubuntu: https://launchpad.net/bugs/<bugnumber>
+Forwarded: <no|not-needed|url proving that it has been forwarded>
+Reviewed-By: <name and email of someone who approved the patch>
+Last-Update: <YYYY-MM-DD>
+
+--- python-poppler-0.12.1.orig/poppler.defs
++++ python-poppler-0.12.1/poppler.defs
+@@ -1702,6 +1702,7 @@
+   (of-object "PopplerPage")
+   (c-name "poppler_page_render")
+   (return-type "none")
++  (unblock-threads #t)
+   (parameters
+     '("cairo_t*" "cairo")
+   )
+@@ -1711,6 +1712,7 @@
+   (of-object "PopplerPage")
+   (c-name "poppler_page_render_for_printing")
+   (return-type "none")
++  (unblock-threads #t)
+   (parameters
+     '("cairo_t*" "cairo")
+   )
+@@ -1720,12 +1722,14 @@
+   (of-object "PopplerPage")
+   (c-name "poppler_page_get_thumbnail")
+   (return-type "cairo_surface_t*")
++  (unblock-threads #t)
+ )
+ 
+ (define-method render_selection
+   (of-object "PopplerPage")
+   (c-name "poppler_page_render_selection")
+   (return-type "none")
++  (unblock-threads #t)
+   (parameters
+     '("cairo_t*" "cairo")
+     '("PopplerRectangle*" "selection")
+@@ -1793,6 +1797,7 @@
+   (of-object "PopplerPage")
+   (c-name "poppler_page_render_to_ps")
+   (return-type "none")
++  (unblock-threads #t)
+   (parameters
+     '("PopplerPSFile*" "ps_file")
+   )
diff -Nru python-poppler-0.12.1/debian/patches/series python-poppler-0.12.1/debian/patches/series
--- python-poppler-0.12.1/debian/patches/series	2011-07-02 12:07:28.000000000 +0000
+++ python-poppler-0.12.1/debian/patches/series	2012-04-03 23:09:45.000000000 +0000
@@ -1 +1,2 @@
 poppler-0.15.diff
+debian-changes-0.12.1-4ubuntu1+ppa0