http://bugs.winehq.org/show_bug.cgi?id=19004
--- Comment #12 from Jaime Rave jaimerave@gmail.com 2009-11-04 10:43:34 --- (In reply to comment #10)
Because it requires native ie6 to reproduce, I don't think this is a wintrust bug just yet. Not that there isn't one, but there's a bug, perhaps in mshtml or shdocvw, which prevents Wine from getting to this point in the first place. Changing component back to unknown.
This looks like the problem described also in http://bugs.winehq.org/show_bug.cgi?id=19352#c8. So the installers of Windows Live Messenger 8.5 and 2009 are hitting the same problem in in mshtml or shdocvw.