I'm using ROS C Turtle on ubuntu 9.04 with bit32. When I start rviz with the command "run rviz rviz", then the rivz is crashed. And the errors as follow:
 ==========================error==============================
get fences failed: -1
param: 6, val: 0

Intel graphics cards don't work well on 9.04.  The only known workaround is to upgrade to 9.10+

http://www.ros.org/wiki/rviz/Troubleshooting#Segfault_in_i915_dri.so

Josh