diff --git a/public/js/legacy/utils/datetime.js b/public/js/legacy/utils/datetime.js
index 2c0e3ea3fa..675bbb6bdb 100644
--- a/public/js/legacy/utils/datetime.js
+++ b/public/js/legacy/utils/datetime.js
@@ -282,6 +282,4 @@ wn.datetime.comment_when = prettyDate;
 // globals (deprecate)
 var date = dateutil = wn.datetime;
 var get_today = wn.datetime.get_today
-var time_to_ampm = wn.datetime.time_to_ampm;
-var time_to_hhmm = wn.datetime.time_to_hhmm;
 var only_date = wn.datetime.only_date;
diff --git a/webnotes/__init__.py b/webnotes/__init__.py
index 353128d8ee..312256dd6a 100644
--- a/webnotes/__init__.py
+++ b/webnotes/__init__.py
@@ -238,13 +238,16 @@ def whitelist(allow_guest=False, allow_roles=[]):
 	return innerfn
 	
 def clear_cache(user=None, doctype=None):
-	"""clear boot cache"""
+	"""clear cache"""
 	if doctype:
 		from webnotes.model.doctype import clear_cache
 		clear_cache(doctype)
+	elif user:
+		from webnotes.sessions import clear_cache
+		clear_cache(user)
 	else:
-		from webnotes.sessions import clear
-		clear(user)
+		from webnotes.sessions import clear_cache
+		clear_cache()
 	
 def get_roles(user=None, with_standard=True):
 	"""get roles of current user"""
diff --git a/webnotes/boot.py b/webnotes/boot.py
index 35a9522feb..6ff0725fb9 100644
--- a/webnotes/boot.py
+++ b/webnotes/boot.py
@@ -78,9 +78,11 @@ def get_bootinfo():
 	return bootinfo
 
 def load_country_and_currency(bootinfo, doclist):
-	if bootinfo.control_panel.country:
+	if bootinfo.control_panel.country and \
+		webnotes.conn.exists("Country", bootinfo.control_panel.country):
 		doclist += [webnotes.doc("Country", bootinfo.control_panel.country)]
-	if bootinfo.sysdefaults.currency:
+	if bootinfo.sysdefaults.currency and \
+		webnotes.conn.exists("Currency", bootinfo.sysdefaults.currency):
 		doclist += [webnotes.doc("Currency", bootinfo.sysdefaults.currency)]
 
 def add_allowed_pages(bootinfo):
diff --git a/webnotes/memc.py b/webnotes/memc.py
index d8dc171307..db4a563cac 100644
--- a/webnotes/memc.py
+++ b/webnotes/memc.py
@@ -31,38 +31,9 @@ class MClient(memcache.Client):
 	
 	def set_value(self, key, val):
 		self.set(self.n(key), val)
-		self.add_to_key_list(key)
 		
 	def get_value(self, key):
 		return self.get(self.n(key))
 		
 	def delete_value(self, key):
-		self.delete(self.n(key))
-		
-	def add_to_key_list(self, key):
-		key_list = self.get_value('key_list') or []
-		if key not in key_list:
-			key_list.append(key)
-		self.set(self.n("key_list"), key_list)
-		
-	def delete_keys(self, startswith=None):
-		"""flush keys from known key_list"""
-		if not startswith:
-			for key in self.get_value('key_list'):
-				self.delete_value(key)
-
-			self.delete_value('key_list')
-		else:
-			deleted = []
-			keys = self.get_value('key_list') or []
-			for key in keys:
-				if key.startswith(startswith):
-					self.delete(self.n(key))
-					deleted.append(key)
-					
-			for d in deleted:
-				keys.remove(d)
-			
-			self.set_value("key_list", keys)
-			# in any case, delete it explicitly
-			self.delete(self.n(startswith))
+		self.delete(self.n(key))
\ No newline at end of file
diff --git a/webnotes/model/doctype.py b/webnotes/model/doctype.py
index e29604dc13..2293ad7ce9 100644
--- a/webnotes/model/doctype.py
+++ b/webnotes/model/doctype.py
@@ -234,7 +234,7 @@ def cache_name(doctype, processed):
 		suffix = ":Raw"
 	return "doctype:" + doctype + suffix
 
-def clear_cache(doctype):
+def clear_cache(doctype=None):
 	global doctype_cache
 
 	def clear_single(dt):
@@ -244,12 +244,18 @@ def clear_cache(doctype):
 		if doctype in doctype_cache:
 			del doctype_cache[dt]
 
-	clear_single(doctype)
+	if doctype:
+		clear_single(doctype)
 	
-	# clear all parent doctypes
-	for dt in webnotes.conn.sql("""select parent from tabDocField 
-		where fieldtype="Table" and options=%s""", doctype):
-		clear_single(dt[0])
+		# clear all parent doctypes
+		for dt in webnotes.conn.sql("""select parent from tabDocField 
+			where fieldtype="Table" and options=%s""", doctype):
+			clear_single(dt[0])
+			
+	else:
+		# clear all
+		for dt in webnotes.conn.sql("""select name from tabDocType"""):
+			clear_single(dt[0])
 
 def add_code(doctype, doclist):
 	import os, conf
diff --git a/webnotes/sessions.py b/webnotes/sessions.py
index 4fd49ca8b4..bbf4250359 100644
--- a/webnotes/sessions.py
+++ b/webnotes/sessions.py
@@ -31,23 +31,28 @@ import webnotes
 import conf
 import json
 from webnotes.utils import cint
+import webnotes.model.doctype
 
 @webnotes.whitelist()
 def clear(user=None):
-	"""clear all cache"""
-	clear_cache(user)
+	clear_cache(webnotes.session.user)
 	webnotes.response['message'] = "Cache Cleared"
 
 
 def clear_cache(user=None):
-	"""clear cache"""
-	webnotes.cache().delete_keys("bootinfo:")
-	webnotes.cache().delete_keys("doctype:")
-	webnotes.cache().delete_keys("session:")
-	if webnotes.session:
-		webnotes.cache().delete_keys("bootinfo:" + webnotes.session.user)
-		if webnotes.session.sid:
-			webnotes.cache().delete_keys("session:" + webnotes.session.sid)
+	cache = webnotes.cache()
+
+	# clear doctype cache
+	webnotes.model.doctype.clear_cache()
+
+	if user:
+		cache.delete_value("bootinfo:" + user)
+		if webnotes.session and webnotes.session.sid:
+			cache.delete_value("session:" + webnotes.session.sid)
+	else:
+		for sess in webnotes.conn.sql("""select user, sid from tabSessions""", as_dict=1):
+			cache.delete_value("sesssion:" + sess.sid)
+			cache.delete_value("bootinfo:" + sess.user)
 	
 def clear_sessions(user=None, keep_current=False):
 	if not user: