diff --git a/Lib/ftplib.py b/Lib/ftplib.py
index e846ffe..8342b09 100644
--- a/Lib/ftplib.py
+++ b/Lib/ftplib.py
@@ -336,7 +336,11 @@
 
 	# Change to a directory
 	def cwd(self, dirname):
-		self.voidcmd('CWD ' + dirname)
+		if dirname == '..':
+			cmd = 'CDUP'
+		else:
+			cmd = 'CWD ' + dirname
+		self.voidcmd(cmd)
 
 	# Retrieve the size of a file
 	def size(self, filename):
diff --git a/Lib/irix5/FL.py b/Lib/irix5/FL.py
index 65184df..f85237b 100755
--- a/Lib/irix5/FL.py
+++ b/Lib/irix5/FL.py
@@ -27,6 +27,7 @@
 PLACE_MOUSE = 3
 PLACE_CENTER = 4
 PLACE_POSITION = 5
+FL_PLACE_FULLSCREEN = 6
 FIND_INPUT = 0
 FIND_AUTOMATIC = 1
 FIND_MOUSE = 2
diff --git a/Lib/plat-irix5/FL.py b/Lib/plat-irix5/FL.py
index 65184df..f85237b 100755
--- a/Lib/plat-irix5/FL.py
+++ b/Lib/plat-irix5/FL.py
@@ -27,6 +27,7 @@
 PLACE_MOUSE = 3
 PLACE_CENTER = 4
 PLACE_POSITION = 5
+FL_PLACE_FULLSCREEN = 6
 FIND_INPUT = 0
 FIND_AUTOMATIC = 1
 FIND_MOUSE = 2
diff --git a/Lib/posixpath.py b/Lib/posixpath.py
index 57b0af6..96116d1 100644
--- a/Lib/posixpath.py
+++ b/Lib/posixpath.py
@@ -270,10 +270,12 @@
 
 def normpath(path):
 	import string
+	# Treat initial slashes specially
+	slashes = ''
+	while path[:1] == '/':
+		slashes = slashes + '/'
+		path = path[1:]
 	comps = string.splitfields(path, '/')
-	# If the path begins with '/', comps[0] is '', which we leave alone;
-	# we also leave leading multiple slashes alone for compatibility
-	# with certain networking naming schemes using //host/path
 	i = 0
 	while i < len(comps):
 		if comps[i] == '.':
@@ -287,6 +289,6 @@
 		else:
 			i = i+1
 	# If the path is now empty, substitute '.'
-	if not comps:
+	if not comps and not slashes:
 		comps.append('.')
-	return string.joinfields(comps, '/')
+	return slashes + string.joinfields(comps, '/')