I just released a new beta of XQuartz. You can download 2.6.2_beta1 by checking for updates within X11 if you are on the beta update feed. To get on the beta feed, run the following: defaults write org.macosforge.xquartz.X11 SUFeedURL http://static.macosforge.org/xquartz/downloads/sparkle/beta.xml You can also download the dmg directly here: http://static.macosforge.org/xquartz/downloads/SL/XQuartz-2.6.2_beta1.dmg With this update, we've moved up to the 1.10.x server branch, updated to xrdb 1.0.9 which fixes CVE-2011-0465, and pulled in a ton of fixes for quartz-wm. The new quartz-wm should work much better with various window behavior and decoration hints such as steam windows running in wine. For the full list of changes, check out the ChangeLog: http://xquartz.macosforge.org/trac/wiki/ChangeLog Thanks, Jeremy