Dear GHC, I have tested ghc-5.02 on various examples of computer algebra, with -O too. All tests are all right, except it shows a bug in memory management (Simon Marlow wrote of), visible in subtly chosen cases. The impression is that 5.02 saves much memory and gains performance in situations involving garbage collections (most practicable case). But due to the above bug, would 5.04 appear soon as a stable release? For I need to mention some newest stable GHC release in DoCon program documentation. Regards, ----------------- Serge Mechveliani mechvel@botik.ru