diff --git a/pylons_app/lib/celerylib/__init__.py b/pylons_app/lib/celerylib/__init__.py
--- a/pylons_app/lib/celerylib/__init__.py
+++ b/pylons_app/lib/celerylib/__init__.py
@@ -31,21 +31,14 @@ def run_task(task, *args, **kwargs):
         return ResultWrapper(task(*args, **kwargs))
 
 
-class LockTask(object):
-    """LockTask decorator"""
-    
-    def __init__(self, func):
-        self.func = func
-        
-    def __call__(self, func):
-        return decorator(self.__wrapper, func)
-    
-    def __wrapper(self, func, *fargs, **fkwargs):
-        params = []
-        params.extend(fargs)
-        params.extend(fkwargs.values())
+def locked_task(func):
+    def __wrapper(func, *fargs, **fkwargs):
+        params = list(fargs)
+        params.extend(['%s-%s' % ar for ar in fkwargs.items()])
+            
         lockkey = 'task_%s' % \
-           md5(str(self.func) + '-' + '-'.join(map(str, params))).hexdigest()
+            md5(str(func.__name__) + '-' + \
+                '-'.join(map(str, params))).hexdigest()
         log.info('running task with lockkey %s', lockkey)
         try:
             l = DaemonLock(lockkey)
@@ -55,7 +48,7 @@ class LockTask(object):
             log.info('LockHeld')
             return 'Task with key %s already running' % lockkey   
 
-            
+    return decorator(__wrapper, func)      
             
 
         
diff --git a/pylons_app/lib/celerylib/tasks.py b/pylons_app/lib/celerylib/tasks.py
--- a/pylons_app/lib/celerylib/tasks.py
+++ b/pylons_app/lib/celerylib/tasks.py
@@ -2,7 +2,7 @@ from celery.decorators import task
 from celery.task.sets import subtask
 from celeryconfig import PYLONS_CONFIG as config
 from pylons.i18n.translation import _
-from pylons_app.lib.celerylib import run_task, LockTask
+from pylons_app.lib.celerylib import run_task, locked_task
 from pylons_app.lib.helpers import person
 from pylons_app.lib.smtp_mailer import SmtpMailer
 from pylons_app.lib.utils import OrderedDict
@@ -82,7 +82,7 @@ def whoosh_index(repo_location, full_ind
 
 
 @task
-@LockTask('get_commits_stats')
+@locked_task
 def get_commits_stats(repo_name, ts_min_y, ts_max_y):
     author_key_cleaner = lambda k: person(k).replace('"', "") #for js data compatibilty