diff --git a/system-config-printer-asyncipp-traceback.patch b/system-config-printer-asyncipp-traceback.patch
index e44b30c..6412886 100644
--- a/system-config-printer-asyncipp-traceback.patch
+++ b/system-config-printer-asyncipp-traceback.patch
@@ -1,6 +1,6 @@
 diff -up system-config-printer-1.2.0/asyncipp.py.asyncipp-traceback system-config-printer-1.2.0/asyncipp.py
---- system-config-printer-1.2.0/asyncipp.py.asyncipp-traceback	2010-03-26 12:50:39.829627667 +0000
-+++ system-config-printer-1.2.0/asyncipp.py	2010-03-26 12:50:51.888627367 +0000
+--- system-config-printer-1.2.0/asyncipp.py.asyncipp-traceback	2010-03-27 10:12:14.667366971 +0000
++++ system-config-printer-1.2.0/asyncipp.py	2010-03-27 10:13:04.081365616 +0000
 @@ -59,6 +59,7 @@ class _IPPConnectionThread(threading.Thr
          self._auth_handler = auth_handler
          self._auth_queue = Queue.Queue (1)
@@ -49,3 +49,59 @@ diff -up system-config-printer-1.2.0/asyncipp.py.asyncipp-traceback system-confi
  
  ###
  ### This is the user-visible class.  Although it does not inherit from
+diff -up system-config-printer-1.2.0/asyncpk1.py.asyncipp-traceback system-config-printer-1.2.0/asyncpk1.py
+--- system-config-printer-1.2.0/asyncpk1.py.asyncipp-traceback	2010-03-27 10:12:14.702364469 +0000
++++ system-config-printer-1.2.0/asyncpk1.py	2010-03-27 10:13:06.407243790 +0000
+@@ -64,6 +64,7 @@ class _PK1AsyncMethodCall:
+         self._fallback_fn = fallback_fn
+         self._fallback_args = args
+         self._fallback_kwds = kwds
++        self._destroyed = False
+         debugprint ("+_PK1AsyncMethodCall: %s" % self)
+ 
+     def __del__ (self):
+@@ -85,6 +86,7 @@ class _PK1AsyncMethodCall:
+ 
+     def _destroy (self):
+         debugprint ("DESTROY: %s" % self)
++        self._destroyed = True
+         del self._bus
+         del self._conn
+         del self._pk_method_name
+@@ -97,6 +99,9 @@ class _PK1AsyncMethodCall:
+         del self._fallback_kwds
+ 
+     def _pk_reply_handler (self, error, *args):
++        if self._destroyed:
++            return
++
+         if str (error) == '':
+             self._client_reply_handler (self._conn, self._unpack_fn (*args))
+             self._destroy ()
+@@ -106,6 +111,9 @@ class _PK1AsyncMethodCall:
+         self.call_fallback_fn ()
+ 
+     def _pk_error_handler (self, exc):
++        if self._destroyed:
++            return
++
+         if exc.get_dbus_name () == CUPS_PK_NEED_AUTH:
+             exc = cups.IPPError (cups.IPP_NOT_AUTHORIZED, 'pkcancel')
+             self._client_error_handler (self._conn, exc)
+@@ -123,10 +131,16 @@ class _PK1AsyncMethodCall:
+         self._fallback_fn (*self._fallback_args, **self._fallback_kwds)
+ 
+     def _ipp_reply_handler (self, conn, *args):
++        if self._destroyed:
++            return
++
+         self._client_reply_handler (self._conn, *args)
+         self._destroy ()
+ 
+     def _ipp_error_handler (self, conn, *args):
++        if self._destroyed:
++            return
++
+         self._client_error_handler (self._conn, *args)
+         self._destroy ()
+ 
diff --git a/system-config-printer.spec b/system-config-printer.spec
index 5bad9b6..b95aa01 100644
--- a/system-config-printer.spec
+++ b/system-config-printer.spec
@@ -7,7 +7,7 @@
 Summary: A printer administration tool
 Name: system-config-printer
 Version: 1.2.0
-Release: 11%{?dist}
+Release: 12%{?dist}
 License: GPLv2+
 URL: http://cyberelk.net/tim/software/system-config-printer/
 Group: System Environment/Base
@@ -258,6 +258,9 @@ rm -rf %buildroot
 exit 0
 
 %changelog
+* Sat Mar 27 2010 Tim Waugh <twaugh@redhat.com> - 1.2.0-12
+- Use upstream fix for async bugs.
+
 * Fri Mar 26 2010 Tim Waugh <twaugh@redhat.com> - 1.2.0-11
 - More async traceback fixes (Ubuntu #547075).