Only in duplicity-0.4.4.RC3.orig: build
diff -ur duplicity-0.4.4.RC3.orig/src/backends.py duplicity-0.4.4.RC3/src/backends.py
--- duplicity-0.4.4.RC3.orig/src/backends.py	Tue Oct  2 12:06:51 2007
+++ duplicity-0.4.4.RC3/src/backends.py	Sun Nov 18 03:55:09 2007
@@ -701,18 +701,36 @@
 	def put(self, source_path, remote_filename=None):
 		if not remote_filename:
 			remote_filename = source_path.get_filename()
-		log.Log("Uploading %s to Amazon S3" % remote_filename, 5)
 		key = self.key_class(self.bucket)
 		key.key = remote_filename
-		key.set_contents_from_filename(source_path.name, 
-				{'Content-Type': 'application/octet-stream'})
+		for n in range(1, globals.num_retries+1):
+			log.Log("Uploading %s to Amazon S3 (attempt #%d)" % (remote_filename, n), 5)
+			try:
+				key.set_contents_from_filename(source_path.name, 
+					{'Content-Type': 'application/octet-stream'})
+				return
+			except:
+				pass
+			log.Log("Uploading %s failed (attempt #%d)" % (remote_filename, n), 1)
+			time.sleep(30)
+		log.Log("Giving up trying to upload %s after %d attempts" % (remote_filename, globals.num_retries), 1)
+		raise BackendException("Error uploading %s" % remote_filename)
 	
 	def get(self, remote_filename, local_path):
-		log.Log("Downloading %s from Amazon S3" % remote_filename, 5)
 		key = self.key_class(self.bucket)
 		key.key = remote_filename
-		key.get_contents_to_filename(local_path.name)
-		local_path.setdata()
+		for n in range(1, globals.num_retries+1):
+			log.Log("Downloading %s from Amazon S3 (attempt #%d)" % (remote_filename, n), 5)
+			try:
+				key.get_contents_to_filename(local_path.name)
+				local_path.setdata()
+				return
+			except:
+				pass
+			log.Log("Downloading %s failed (attempt #%d)" % (remote_filename, n), 1)
+			time.sleep(30)
+		log.Log("Giving up trying to download %s after %d attempts" % (remote_filename, globals.num_retries), 1)
+		raise BackendException("Error downloading %s" % remote_filename)
 
 	def list(self):
 		filename_list = [k.key for k in self.bucket]