test for 6.8.3-may27

About the 6.8.3 candidate of May 27,

there remains the question:
why it builds DoCon-2.11 considerably slower than  ghc-6.8.2 
(3 times, as I recall)
and needs larger -M memory to build this DoCon
?

Regards, 

-----------------
Serge Mechveliani
mechvel <at> botik.ru