I am using Blender SVN Rev 50974 Debug Build on a Fedora 17 32bit box.

I have a blend file with 2 array modifiers active on a cube, if I apply the last modifier in the list Blender will segfault.

I have attached my system info, the blend file showing the issue, and a backtrace.

Simply open the blend file goto the last array modifier in the last apply it > seg fault.

Note: This could be something with my build because it doesn't crash with the official Blender 2.64rc2 release, or something changed in more recent SVN, but I cannot tell which.