Hi, Copy and paste between X11 applications and native ones doesn't work in both ways: - Macbook Air - Mac OS X 10.5.6 - X11 2.3.2.1 It doesn't work even right after a clean installation of Mac OS X 10.5.6 and X11 2.3.2.1. If X11 is downgraded to 2.3.1, then it works. Could anyone give me suggestions? Thank you. Shigenobu