Flawless install and it ran my very simple minded (try not to laugh) nested loop integer arithmetic benchmark twice as fast as 2.2.3 version 2.3 5.04 sec version 2.2.3 9.77 sec import time def speedTest(N): t1 = time.time() k = 0 for i in xrange(N): for j in xrange(N): k += (i+j) t2 = time.time() return t2-t1 print speedTest(3000) david lees