diff --git a/iwla.py b/iwla.py
index 5279434..753179b 100755
--- a/iwla.py
+++ b/iwla.py
@@ -7,13 +7,14 @@ import glob
 import imp
 import pickle
 import gzip
+
 from robots import awstats_robots;
 
 print '==> Start'
 
 meta_visit = {'last_time':None}
 analyse_started = False
-current_visit = {}
+current_visits = {}
 
 log_format = '$server_name:$server_port $remote_addr - $remote_user [$time_local] ' +\
     '"$request" $status $body_bytes_sent ' +\
@@ -41,7 +42,11 @@ print '==> Generating robot dictionary'
 
 awstats_robots = map(lambda (x) : re.compile(x, re.IGNORECASE), awstats_robots)
 
-def get_db_filename(time):
+def createEmptyVisits():
+    visits = {'days_stats' : {}, 'month_stats' : {}, 'visits' : {}}
+    return visits
+
+def getDBFilename(time):
     return (DB_ROOT + '%d/%d_%s') % (time.tm_year, time.tm_mon, DB_FILENAME)
 
 def serialize(obj, filename):
@@ -64,7 +69,10 @@ def deserialize(filename):
         return pickle.load(f)
     return None
 
-def call_plugins(path, *kwargs):
+def createEmptyVisits():
+    pass
+
+def callPlugins(path, *kwargs):
     print '==> Call plugins (%s)' % path
     plugins = glob.glob(path)
     plugins.sort()
@@ -81,7 +89,7 @@ def isPage(request):
     return False
 
 def appendHit(hit):
-    super_hit = current_visit[hit['remote_addr']]
+    super_hit = current_visits[hit['remote_addr']]
     super_hit['pages'].append(hit)
     super_hit['bandwith'] += int(hit['body_bytes_sent'])
     
@@ -111,7 +119,7 @@ def appendHit(hit):
         super_hit[hit_key] += 1
     
 def createUser(hit):
-    super_hit = current_visit[hit['remote_addr']] = {}
+    super_hit = current_visits[hit['remote_addr']] = {}
     super_hit['viewed_pages'] = 0;
     super_hit['viewed_hits'] = 0;
     super_hit['not_viewed_pages'] = 0;
@@ -127,7 +135,7 @@ def isRobot(hit):
             return True
     return False
 
-def decode_http_request(hit):
+def decodeHTTPRequest(hit):
     if not 'request' in hit.keys(): return False
 
     groups = http_request_extracted.match(hit['request'])
@@ -149,18 +157,18 @@ def decode_http_request(hit):
         referer = hit['extract_referer'] = referer_groups.groupdict()
     return True
 
-def decode_time(hit):
+def decodeTime(hit):
     t = hit['time_local']
 
     hit['time_decoded'] = time.strptime(t, time_format)
 
 
-def generate_month_stats():
-    call_plugins(PRE_HOOK_DIRECTORY, current_visit)
+def generateMonthStats():
+    callPlugins(PRE_HOOK_DIRECTORY, current_visits)
 
-    valid_visitors = {k: v for (k,v) in current_visit.items() if not current_visit[k]['robot']}
+    valid_visitors = {k: v for (k,v) in current_visits.items() if not current_visits[k]['robot']}
 
-    call_plugins(POST_HOOK_DIRECTORY, valid_visitors)
+    callPlugins(POST_HOOK_DIRECTORY, valid_visitors)
 
     stats = {}
     stats['viewed_bandwidth'] = 0
@@ -169,8 +177,8 @@ def generate_month_stats():
     stats['viewed_hits'] = 0
     stats['pages'] = set()
 
-    for k in current_visit.keys():
-        super_hit = current_visit[k]
+    for k in current_visits.keys():
+        super_hit = current_visits[k]
         if super_hit['robot']:
             stats['not_viewed_bandwidth'] += super_hit['bandwith']
             continue
@@ -189,27 +197,27 @@ def generate_month_stats():
     print "== Stats for %d/%d ==" % (cur_time.tm_year, cur_time.tm_mon)
     print stats
 
-    path = get_db_filename(cur_time)
+    path = getDBFilename(cur_time)
     if os.path.exists(path):
         os.remove(path)
 
     print "==> Serialize to %s" % path
 
-    serialize(current_visit, path)
+    serialize(current_visits, path)
 
 def newHit(hit):
-    global current_visit
+    global current_visits
     global analyse_started
 
-    decode_time(hit)
+    decodeTime(hit)
 
     t = hit['time_decoded']
 
     cur_time = meta_visit['last_time']
 
     if cur_time == None:
-        current_visit = deserialize(get_db_filename(t))
-        if not current_visit: current_visit = {}
+        current_visits = deserialize(getDBFilename(t))
+        if not current_visits: current_visits = {}
         analyse_started = True
     else:
         if not analyse_started:
@@ -217,20 +225,22 @@ def newHit(hit):
                 return
             else:
                 analyse_started = True
+                current_visits = deserialize(getDBFilename(t))
+                if not current_visits: current_visits = {}
         if cur_time.tm_mon != t.tm_mon:
-            generate_month_stats()
-            current_visit = deserialize(get_db_filename(t))
-            if not current_visit: current_visit = {}
+            generateMonthStats()
+            current_visits = deserialize(getDBFilename(t))
+            if not current_visits: current_visits = {}
 
     meta_visit['last_time'] = t
 
-    if not decode_http_request(hit): return False
+    if not decodeHTTPRequest(hit): return False
 
     for k in hit.keys():
         if hit[k] == '-': hit[k] = ''
 
     remote_addr = hit['remote_addr']
-    if remote_addr in current_visit.keys():
+    if remote_addr in current_visits.keys():
         appendHit(hit)
     else:
         createUser(hit)
@@ -256,5 +266,8 @@ for l in f:
         print "No match " + l
 f.close();
 
-generate_month_stats()
-serialize(meta_visit, META_PATH)
+if analyse_started:
+    generateMonthStats()
+    serialize(meta_visit, META_PATH)
+else:
+    print '==> Analyse not started : nothing to do'