Index: src/common/effects/pseffectanchor.cpp
===================================================================
--- src/common/effects/pseffectanchor.cpp	(revision 5654)
+++ src/common/effects/pseffectanchor.cpp	(working copy)
@@ -229,8 +229,7 @@
         animLength = 10;
 
     life += (float)elapsed;
-    while (life > animLength)
-        life -= animLength;
+    life = life - (int)(life/animLength)*animLength;
 
     if (keyFrames->GetSize() == 0)
         return true;