Reading the following may help: http://bugs.winehq.org/show_bug.cgi?id=14109 and http://forum.winehq.org/viewtopic.php?t=1520 My reading is that you are suffering from the regression described in bug 14109. The workaround described in the forum post is for installing Wine gecko. If that helps, great, if not, I guess you should try to get the patch mentioned in the bug report.
