Hi, Daniel recently posted a list of X extensions supported by the Apple X11 server. The MIT-SHM extension was part of this list but today I found that at least in darwinports gtk2 is compiled with the --disable-shm configure option. Does anyone know if fink does this as well? Is there a particular reason to disable the use of the XShm extension on OS X? This would explain at least some of the slowness that people reported here lately. Sven