http://bugs.winehq.org/show_bug.cgi?id=31258
--- Comment #20 from Andrew Eikum aeikum@codeweavers.com 2012-08-29 08:50:21 CDT --- "Unmodified Wine" means the version of Wine that we distribute from winehq.org. Your distribution's package maintainer has taken the Wine source code, made modifications to it, and released it to you through your distribution's package manager. The modifications that have been made to Wine by your package manager are causing this problem. It's not a settings or end-user configuration problem.
You should open a bug with your distribution, or somehow contact your Wine package maintainer and let them know about this bug. I described the problem in comment 18, so it shouldn't be too difficult for them to track it down and fix it.