just updated latest Xorg. apart from the sync-to-vblank intel's issue no troubles at all at first glance but I start seeing this in the logs (excerpt)
(II) LoadModule: "record" (II) Loading /usr/X11R6/lib/modules/extensions//librecord.so (II) Module record: vendor="X.Org Foundation" compiled for 1.4.2, module version = 1.13.0 Module class: X.Org Server Extension ABI class: X.Org Server Extension, version 0.3 (EE) module ABI major version (0) doesn't match the server's version (1) (II) UnloadModule: "record" (II) Unloading /usr/X11R6/lib/modules/extensions//librecord.so (EE) Failed to load module "record" (module requirement mismatch, 0) (II) LoadModule: "xtrap" (II) Loading /usr/X11R6/lib/modules/extensions//libxtrap.so (II) Module xtrap: vendor="X.Org Foundation" compiled for 1.4.2, module version = 1.0.0 Module class: X.Org Server Extension ABI class: X.Org Server Extension, version 0.3 (EE) module ABI major version (0) doesn't match the server's version (1) (II) UnloadModule: "xtrap" (II) Unloading /usr/X11R6/lib/modules/extensions//libxtrap.so (EE) Failed to load module "xtrap" (module requirement mismatch, 0) for taking away it I've temporary added Section "ServerFlags" Option "IgnoreABI" "True" EndSection -- see ya, giovanni