Hi!
When I render my scene i have a crash (revision 47390). 2 weeks ago the scene were rendered ok.
Blend file (just open it and press F12): http://dl.dropbox.com/u/26887202/blender/segmentation_fault.blend
Tested on Linux kubuntu 64 bit with this build http://www.graphicall.org/815 .
Log: Segmentation Fault
Description
Description