http://bugs.winehq.org/show_bug.cgi?id=27479
--- Comment #5 from Hans Leidekker hans@meelstraat.net 2011-06-14 14:09:40 CDT --- (In reply to comment #4)
Actually it's regression because in Wine 1.3.20 it installs to 1.5 GB and in Wine 1.3.22 to 500 MB. In both cases it shows that installation is interrupted.
Recently added support for rollbacks explains that, so this is not a regression. But it obviously has a bug if so much space is still in use.