Index: leahi_dialin/ui/utils.py
===================================================================
diff -u -r9f44c02ff3f40812ab9fd7f9c7346f649a114c19 -r126c206228086fbd13e820980c2fbb2fb58131bb
--- leahi_dialin/ui/utils.py	(.../utils.py)	(revision 9f44c02ff3f40812ab9fd7f9c7346f649a114c19)
+++ leahi_dialin/ui/utils.py	(.../utils.py)	(revision 126c206228086fbd13e820980c2fbb2fb58131bb)
@@ -17,23 +17,25 @@
 import time
 import struct
 from subprocess import check_output
+import threading
 
-def singleton(cls):
+def singleton_threadsafe(cls):
     """
     This is a singleton decorator
     Returns:
         cls: as for defintion of the singleton, it created the class instance once and will return on each access, instead of the recreation.
     """
     instances = {}
+    lock = threading.Lock()
 
     def get_instance(*args, **kwargs):
-        if cls not in instances:
-            instances[cls] = cls(*args, **kwargs)
+        with lock:
+            if cls not in instances:
+                instances[cls] = cls(*args, **kwargs)
         return instances[cls]
 
     return get_instance
 
-
 def srsui(vstr=""):
     """
     for user convenience if wanted to put a note for the SRSUI