I've also seen this issue lately:
Jan 26 16:28:59 ubuntu-012 kernel: [ 27.368740] fusion-icon[3457]: segfault at 18 ip 00007fb0c491d784 sp 00007fff3a7c43c0 error 4 in libcompizconfig.so.0.0.0[7fb0c48f9000+4e000]
Jan 27 08:53:32 ubuntu-012 kernel: [ 29.085420] fusion-icon[3578]: segfault at 18 ip 00007f5095dc4784 sp 00007ffff671aa80 error 4 in libcompizconfig.so.0.0.0[7f5095da0000+4e000]
Jan 27 17:15:22 ubuntu-012 kernel: [ 34.532986] fusion-icon[3577]: segfault at 18 ip 00007f88203cd784 sp 00007fff73234f90 error 4 in libcompizconfig.so.0.0.0[7f88203a9000+4e000]
Jan 28 08:26:32 ubuntu-012 kernel: [ 37.854354] fusion-icon[3767]: segfault at 18 ip 00007f0a8141b784 sp 00007fff035ad730 error 4 in libcompizconfig.so.0.0.0[7f0a813f7000+4e000]
Jan 28 15:18:16 ubuntu-012 kernel: [ 29.064174] fusion-icon[3604]: segfault at 18 ip 00007f43d5966784 sp 00007fffbbb6ed90 error 4 in libcompizconfig.so.0.0.0[7f43d5942000+4e000]
Jan 28 22:19:28 ubuntu-012 kernel: [ 24.939160] fusion-icon[3602]: segfault at 18 ip 00007f2b2a67e784 sp 00007fffc4705c70 error 4 in libcompizconfig.so.0.0.0[7f2b2a65a000+4e000]
Jan 29 09:24:36 ubuntu-012 kernel: [ 40.099920] fusion-icon[3609]: segfault at 18 ip 00007fe51324f784 sp 00007fff1ad96dd0 error 4 in libcompizconfig.so.0.0.0[7fe51322b000+4e000]
Jan 29 15:03:30 ubuntu-012 kernel: [ 28.776864] fusion-icon[3394]: segfault at 18 ip 00007fb76d52d784 sp 00007fffb1a17f30 error 4 in libcompizconfig.so.0.0.0[7fb76d509000+4e000]
Jan 29 21:44:22 ubuntu-012 kernel: [ 28.702101] fusion-icon[3478]: segfault at 18 ip 00007fc163331784 sp 00007fff4d8eb9e0 error 4 in libcompizconfig.so.0.0.0[7fc16330d000+4e000]
Jan 30 12:15:08 ubuntu-012 kernel: [ 52.958196] fusion-icon[3667]: segfault at 18 ip 00007fb7296ca784 sp 00007fffde10bc50 error 4 in libcompizconfig.so.0.0.0[7fb7296a6000+4e000]
Jan 30 16:56:00 ubuntu-012 kernel: [16925.893564] fusion-icon[6918]: segfault at 18 ip 00007fb026dce784 sp 00007fff6d51d360 error 4 in libcompizconfig.so.0.0.0[7fb026daa000+4e000]
Jan 30 17:01:53 ubuntu-012 kernel: [17279.211277] Xorg[6672]: segfault at 7f7417bf4000 ip 00007f742271c14c sp 00007f741c5898c8 error 4 in libpixman-1.so.0.30.2[7f74226ab000+a1000]
Jan 30 17:02:00 ubuntu-012 kernel: [17285.613790] fusion-icon[8446]: segfault at 18 ip 00007f2a5ce15784 sp 00007fff54d94770 error 4 in libcompizconfig.so.0.0.0[7f2a5cdf1000+4e000]
Jan 30 17:07:31 ubuntu-012 kernel: [17617.047878] fusion-icon[10016]: segfault at 18 ip 00007fc8f6ce5784 sp 00007fff17339e30 error 4 in libcompizconfig.so.0.0.0[7fc8f6cc1000+4e000]
Jan 30 17:08:03 ubuntu-012 kernel: [17649.120833] fusion-icon[10837]: segfault at 18 ip 00007f1fbae37784 sp 00007ffff5ce64c0 error 4 in libcompizconfig.so.0.0.0[7f1fbae13000+4e000]
Jan 30 17:09:01 ubuntu-012 kernel: [17707.137432] fusion-icon[11687]: segfault at 18 ip 00007fc2c9862784 sp 00007fff5b4d2af0 error 4 in libcompizconfig.so.0.0.0[7fc2c983e000+4e000]
Jan 30 17:12:44 ubuntu-012 kernel: [ 38.954690] fusion-icon[3628]: segfault at 18 ip 00007ff878e70784 sp 00007fff4d6464f0 error 4 in libcompizconfig.so.0.0.0[7ff878e4c000+4e000]
Jan 30 17:14:05 ubuntu-012 kernel: [ 119.313304] fusion-icon[4449]: segfault at 18 ip 00007f71cf6ba784 sp 00007fffc6eba760 error 4 in libcompizconfig.so.0.0.0[7f71cf696000+4e000]
Jan 30 17:19:03 ubuntu-012 kernel: [ 417.699971] fusion-icon[7175]: segfault at 18 ip 00007ff861dff784 sp 00007fff509dfaf0 error 4 in libcompizconfig.so.0.0.0[7ff861ddb000+4e000]
Jan 30 17:28:21 ubuntu-012 kernel: [ 976.437602] fusion-icon[8036]: segfault at 18 ip 00007f68fe819784 sp 00007fff84244210 error 4 in libcompizconfig.so.0.0.0[7f68fe7f5000+4e000]
Jan 30 17:30:38 ubuntu-012 kernel: [ 1113.549803] fusion-icon[8957]: segfault at 18 ip 00007fef9e833784 sp 00007fff148aac70 error 4 in libcompizconfig.so.0.0.0[7fef9e80f000+4e000]
Jan 30 17:38:50 ubuntu-012 kernel: [ 19.811715] fusion-icon[3084]: segfault at 18 ip 00007fa1ee31a784 sp 00007fff4c264310 error 4 in libcompizconfig.so.0.0.0[7fa1ee2f6000+4e000]
Jan 30 19:27:02 ubuntu-012 kernel: [ 28.972473] fusion-icon[3307]: segfault at 18 ip 00007fe353dbb784 sp 00007fffcee39970 error 4 in libcompizconfig.so.0.0.0[7fe353d97000+4e000]
I've also seen this issue lately: .so.0.0. 0[7fb0c48f9000+ 4e000] .so.0.0. 0[7f5095da0000+ 4e000] .so.0.0. 0[7f88203a9000+ 4e000] .so.0.0. 0[7f0a813f7000+ 4e000] .so.0.0. 0[7f43d5942000+ 4e000] .so.0.0. 0[7f2b2a65a000+ 4e000] .so.0.0. 0[7fe51322b000+ 4e000] .so.0.0. 0[7fb76d509000+ 4e000] .so.0.0. 0[7fc16330d000+ 4e000] .so.0.0. 0[7fb7296a6000+ 4e000] .so.0.0. 0[7fb026daa000+ 4e000] 1.so.0. 30.2[7f74226ab0 00+a1000] .so.0.0. 0[7f2a5cdf1000+ 4e000] .so.0.0. 0[7fc8f6cc1000+ 4e000] .so.0.0. 0[7f1fbae13000+ 4e000] .so.0.0. 0[7fc2c983e000+ 4e000] .so.0.0. 0[7ff878e4c000+ 4e000] .so.0.0. 0[7f71cf696000+ 4e000] .so.0.0. 0[7ff861ddb000+ 4e000] .so.0.0. 0[7f68fe7f5000+ 4e000] .so.0.0. 0[7fef9e80f000+ 4e000] .so.0.0. 0[7fa1ee2f6000+ 4e000] .so.0.0. 0[7fe353d97000+ 4e000]
Jan 26 16:28:59 ubuntu-012 kernel: [ 27.368740] fusion-icon[3457]: segfault at 18 ip 00007fb0c491d784 sp 00007fff3a7c43c0 error 4 in libcompizconfig
Jan 27 08:53:32 ubuntu-012 kernel: [ 29.085420] fusion-icon[3578]: segfault at 18 ip 00007f5095dc4784 sp 00007ffff671aa80 error 4 in libcompizconfig
Jan 27 17:15:22 ubuntu-012 kernel: [ 34.532986] fusion-icon[3577]: segfault at 18 ip 00007f88203cd784 sp 00007fff73234f90 error 4 in libcompizconfig
Jan 28 08:26:32 ubuntu-012 kernel: [ 37.854354] fusion-icon[3767]: segfault at 18 ip 00007f0a8141b784 sp 00007fff035ad730 error 4 in libcompizconfig
Jan 28 15:18:16 ubuntu-012 kernel: [ 29.064174] fusion-icon[3604]: segfault at 18 ip 00007f43d5966784 sp 00007fffbbb6ed90 error 4 in libcompizconfig
Jan 28 22:19:28 ubuntu-012 kernel: [ 24.939160] fusion-icon[3602]: segfault at 18 ip 00007f2b2a67e784 sp 00007fffc4705c70 error 4 in libcompizconfig
Jan 29 09:24:36 ubuntu-012 kernel: [ 40.099920] fusion-icon[3609]: segfault at 18 ip 00007fe51324f784 sp 00007fff1ad96dd0 error 4 in libcompizconfig
Jan 29 15:03:30 ubuntu-012 kernel: [ 28.776864] fusion-icon[3394]: segfault at 18 ip 00007fb76d52d784 sp 00007fffb1a17f30 error 4 in libcompizconfig
Jan 29 21:44:22 ubuntu-012 kernel: [ 28.702101] fusion-icon[3478]: segfault at 18 ip 00007fc163331784 sp 00007fff4d8eb9e0 error 4 in libcompizconfig
Jan 30 12:15:08 ubuntu-012 kernel: [ 52.958196] fusion-icon[3667]: segfault at 18 ip 00007fb7296ca784 sp 00007fffde10bc50 error 4 in libcompizconfig
Jan 30 16:56:00 ubuntu-012 kernel: [16925.893564] fusion-icon[6918]: segfault at 18 ip 00007fb026dce784 sp 00007fff6d51d360 error 4 in libcompizconfig
Jan 30 17:01:53 ubuntu-012 kernel: [17279.211277] Xorg[6672]: segfault at 7f7417bf4000 ip 00007f742271c14c sp 00007f741c5898c8 error 4 in libpixman-
Jan 30 17:02:00 ubuntu-012 kernel: [17285.613790] fusion-icon[8446]: segfault at 18 ip 00007f2a5ce15784 sp 00007fff54d94770 error 4 in libcompizconfig
Jan 30 17:07:31 ubuntu-012 kernel: [17617.047878] fusion-icon[10016]: segfault at 18 ip 00007fc8f6ce5784 sp 00007fff17339e30 error 4 in libcompizconfig
Jan 30 17:08:03 ubuntu-012 kernel: [17649.120833] fusion-icon[10837]: segfault at 18 ip 00007f1fbae37784 sp 00007ffff5ce64c0 error 4 in libcompizconfig
Jan 30 17:09:01 ubuntu-012 kernel: [17707.137432] fusion-icon[11687]: segfault at 18 ip 00007fc2c9862784 sp 00007fff5b4d2af0 error 4 in libcompizconfig
Jan 30 17:12:44 ubuntu-012 kernel: [ 38.954690] fusion-icon[3628]: segfault at 18 ip 00007ff878e70784 sp 00007fff4d6464f0 error 4 in libcompizconfig
Jan 30 17:14:05 ubuntu-012 kernel: [ 119.313304] fusion-icon[4449]: segfault at 18 ip 00007f71cf6ba784 sp 00007fffc6eba760 error 4 in libcompizconfig
Jan 30 17:19:03 ubuntu-012 kernel: [ 417.699971] fusion-icon[7175]: segfault at 18 ip 00007ff861dff784 sp 00007fff509dfaf0 error 4 in libcompizconfig
Jan 30 17:28:21 ubuntu-012 kernel: [ 976.437602] fusion-icon[8036]: segfault at 18 ip 00007f68fe819784 sp 00007fff84244210 error 4 in libcompizconfig
Jan 30 17:30:38 ubuntu-012 kernel: [ 1113.549803] fusion-icon[8957]: segfault at 18 ip 00007fef9e833784 sp 00007fff148aac70 error 4 in libcompizconfig
Jan 30 17:38:50 ubuntu-012 kernel: [ 19.811715] fusion-icon[3084]: segfault at 18 ip 00007fa1ee31a784 sp 00007fff4c264310 error 4 in libcompizconfig
Jan 30 19:27:02 ubuntu-012 kernel: [ 28.972473] fusion-icon[3307]: segfault at 18 ip 00007fe353dbb784 sp 00007fffcee39970 error 4 in libcompizconfig