http://bugs.winehq.org/show_bug.cgi?id=20204
--- Comment #2 from Jörg Höhle hoehle@users.sourceforge.net 2009-09-30 11:30:41 --- commit 08df19b40510f37d89bb7740abcacfa6ad246f91 about ReleaseStgMedium fixed the causes of the crashes. Now test.winehq will start to show reproducable results for ole32:clipboard.
Hmm, maybe the variability of results about marshal.ok http://test.winehq.org/data/tests/ole32:marshal.html can be explained by a similar bad usage of destructors?