Computation errors on MacOS

My last two WUs aborted with a SIGPE, each at about 100 % completed :

2008-11-05 13:13:16.9991 [normal]: Start of BOINC application 'einstein_S5R4_6.01_i686-apple-darwin'.
2008-11-05 13:13:17.0220 [debug]: Set up communication with graphics process.
2008-11-05 13:13:17.3205 [debug]: Reading SFTs and setting up stacks ... done
2008-11-05 13:13:58.7882 [debug]: Successfully read checkpoint
2008-11-05 13:13:58.7883 [debug]: Total skypoints = 838. Progress:  done.
SIGBUS: bus error


Crashed executable name: einstein_S5R4_6.01_i686-apple-darwin

Machine type Intel 80486 (32-bit executable)

System version: Macintosh OS 10.5.5 build 9F33

Wed Nov  5 13:13:59 2008

atos cannot load symbols for the file einstein_S5R4_6.01_i686-apple-darwin.

  0  0x0017842f  SIGPIPE: write on a pipe with no reader

  1  0x0016ae66  SIGPIPE: write on a pipe with no reader

  2  0x935a009b  SIGPIPE: write on a pipe with no reader

  3  0xffffffff  SIGPIPE: write on a pipe with no reader

  4  0x00026bc9  SIGPIPE: write on a pipe with no reader

  5  0x00001f62  SIGPIPE: write on a pipe with no reader

  6  0x00001e89  SIGPIPE: write on a pipe with no reader

 

It this a known problem ?
It looks for me like an application related problem.