Index: libcfa/src/concurrency/kernel/cluster.hfa
===================================================================
--- libcfa/src/concurrency/kernel/cluster.hfa	(revision d1cd4c4dc530cd40ec33f215b62869eacdf24917)
+++ libcfa/src/concurrency/kernel/cluster.hfa	(revision d0a00a5acab80e606b4d6c089cdfddf9d565bc4e)
@@ -39,5 +39,5 @@
 
 // convert to log2 scale but using double
-static inline __readyQ_avg_t __to_readyQ_avg(unsigned long long intsc) { return log2(intsc); }
+static inline __readyQ_avg_t __to_readyQ_avg(unsigned long long intsc) { if(unlikely(0 == intsc)) return 0.0; else return log2(intsc); }
 
 #define warn_large_before warnf( !strict || old_avg < 35.0, "Suspiciously large previous average: %'lf, %'ldms \n", old_avg, program()`ms )
@@ -56,5 +56,4 @@
 	uint64_t *rp = &ret;
 	double ret = *(volatile double *)rp;
-	double c = 3e-100;
 	/* paranoid */ verify( ret == 0 || ret > 3e-100 );
 	return ret;