I can verify that PlaneShift-v0.4.03-x86.bin does indeed segfault when you run it under Fedora 10.  The md5sum matches, there isn't anything wrong with the download.  Running the installer with "--mode text" worked and Planeshift installed successfully.  Post-install I ran psupdater, pssetup, and psclient (in that order), and I just finished the tutorial.  The client runs acceptably at 800x600 on my integrated Intel graphics laptop.