Created attachment 3290 Proposed fix #1 The function registry.c/xsettings_registry_store_xrdb contains a potential race condition which I stumbled upon yesterday (http://forum.xfce.org/viewtopic.php?pid=20342). The function executes xrdb to set xft & xcursor values using g_spawn_command_line_async. On a SMP system two or more xrdbs might be executed simultaneously, which might cause possible loss of some of the changes. An alike bug was filed in Gentoo for Gnome a year ago. The bug report: http://bugs.gentoo.org/show_bug.cgi?id=293426 And the fix: http://git.gnome.org/browse/gnome-settings-daemon/commit/?id=aa32ea50fc596100750988513004f7b86148388a The bug also exists in the latest development version of Xfce4-settings. Attached (registry-1.patch) is a proposed fix for the bug. I wrote it based on the Gnome fix. The function 'update_property' was copied from the Gnome fix and 'remove_property' was written based on it. I removed storing the settings in files (Xcursor.xrdb & Xft.xrdb), because I did see any use for them anymore.
Pushed changes to a branch, not sure if we should apply this before 4.8. It seems to work fine tho. http://git.xfce.org/xfce/xfce4-settings/log/?h=nick/wip-bug-7014
Fixed in xfce4-settings 4.7.7.