Got a few of these.

<message>
process exited with code 193 (0xc1, -63)
</message>
<stderr_txt>
boinc initialized
work files resolved, now working
-> ../../projects/escatter11.fullerton.edu_nfs/lasieved_1.10_x86_64-pc-linux-gnu
-> -r
-> -f
-> 289936000
-> -c
-> 16000
-> -R
-> ../../projects/escatter11.fullerton.edu_nfs/C254_133_85.poly
-> -o
-> ../../projects/escatter11.fullerton.edu_nfs/C254_133_85_289936_0_r538901660_0
boinc initialized
work files resolved, now working
-> ../../projects/escatter11.fullerton.edu_nfs/lasieved_1.10_x86_64-pc-linux-gnu
-> -r
-> -f
-> 289936000
-> -c
-> 16000
-> -R
-> ../../projects/escatter11.fullerton.edu_nfs/C254_133_85.poly
-> -o
-> ../../projects/escatter11.fullerton.edu_nfs/C254_133_85_289936_0_r538901660_0
boinc initialized
work files resolved, now working
-> ../../projects/escatter11.fullerton.edu_nfs/lasieved_1.10_x86_64-pc-linux-gnu
-> -r
-> -f
-> 289936000
-> -c
-> 16000
-> -R
-> ../../projects/escatter11.fullerton.edu_nfs/C254_133_85.poly
-> -o
-> ../../projects/escatter11.fullerton.edu_nfs/C254_133_85_289936_0_r538901660_0
SIGSEGV: segmentation violation
Stack trace (3 frames):
[0x4808dd]
[0x48fb50]
[0x454954]

Which appear to correspond with syslog issues (and then an unstable system) - http://pastebin.ubuntu.com/24807896/