diff -Nru modemmanager-0.5/debian/changelog modemmanager-0.5/debian/changelog
--- modemmanager-0.5/debian/changelog	2011-09-07 20:48:59.000000000 +0700
+++ modemmanager-0.5/debian/changelog	2012-01-02 22:03:30.000000000 +0700
@@ -1,3 +1,13 @@
+modemmanager (0.5-1ubuntu2) precise; urgency=low
+
+  * debian/patches/arduino-blacklist.patch: add Arduino devices to blacklist
+    to prevent managing Arduino devices. (LP: #910736)
+    - [0403:6001] FT232 USB-Serial (UART) IC.
+    - [03eb:204b] Atmel Corp. LUFA USB to Serial Adapter Project.
+    - Anything with the Arduino VID (2341).
+
+ -- Artem Popov <artfwo@ubuntu.com>  Mon, 02 Jan 2012 13:32:18 +0700
+
 modemmanager (0.5-1ubuntu1) oneiric; urgency=low
 
   * debian/patches/qdl-blacklist.patch: add more devices to the blacklist of
diff -Nru modemmanager-0.5/debian/patches/arduino-blacklist.patch modemmanager-0.5/debian/patches/arduino-blacklist.patch
--- modemmanager-0.5/debian/patches/arduino-blacklist.patch	1970-01-01 06:00:00.000000000 +0600
+++ modemmanager-0.5/debian/patches/arduino-blacklist.patch	2012-01-02 21:09:23.000000000 +0700
@@ -0,0 +1,15 @@
+Index: modemmanager.fix-910736/src/77-mm-usb-device-blacklist.rules
+===================================================================
+--- modemmanager.fix-910736.orig/src/77-mm-usb-device-blacklist.rules	2012-01-02 13:52:27.976866000 +0700
++++ modemmanager.fix-910736/src/77-mm-usb-device-blacklist.rules	2012-01-02 13:55:27.610373581 +0700
+@@ -77,5 +77,10 @@
+ # QinHeng Electronics HL-340
+ ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="7523", ENV{ID_MM_DEVICE_IGNORE}="1"
+ 
++# Arduino devices, FT-232-based series and Atmega8U2 (Uno)
++ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", ENV{ID_MM_DEVICE_IGNORE}="1"
++ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="204b", ENV{ID_MM_DEVICE_IGNORE}="1"
++ATTRS{idVendor}=="2341", ENV{ID_MM_DEVICE_IGNORE}="1"
++
+ LABEL="mm_usb_device_blacklist_end"
+ 
diff -Nru modemmanager-0.5/debian/patches/series modemmanager-0.5/debian/patches/series
--- modemmanager-0.5/debian/patches/series	2011-09-07 20:48:59.000000000 +0700
+++ modemmanager-0.5/debian/patches/series	2012-01-02 21:09:23.000000000 +0700
@@ -1,3 +1,4 @@
 # patches for modemmanager
 qdl-blacklist.patch
 lp700316_usb_blacklist.patch
+arduino-blacklist.patch