This keeps cropping up on my system. I have reinstalled the OS and that helps for a while but eventually it crops up again. This morning I was running a compiled program I have used for a long time and it happened again. I am wondering if anybody knows if programs need to be recompiled when the OS is updated. This program, and many other C programs I use, have never been recompiled as long as I have been running OS X. I rebuilt the cache and ran the program again and had no problem. However, everything had been working fine since the last time I reinstalled the OS on 10/01 until I ran this program.