http://bugs.winehq.org/show_bug.cgi?id=28898
--- Comment #43 from lyon@pvfree.net 2012-03-20 17:14:54 CDT --- Created attachment 39480 --> http://bugs.winehq.org/attachment.cgi?id=39480 Patch with modified lsof parameters.
Ok, I think I've got the cause of the randomness: 'lsof' is doing a reverse lookup for each entry by default, so passing "-n" parameter to it makes my copy of the installer running at the speed of light :)