I think my system is suffering with the same (or similar) issue. The
symptom is that during normal use (Ubuntu 13.10) the system will lock
up. The mouse can still be moved but I can't click on any open
applications. The sound services will continue to operate (seemingly in
the background). Then I wait for about 10 to 20 seconds and the windows
will kind of go nuts (and that's a technical term!) flashing all the
windows up seemingly in a random order until it finally shows just the
wall paper (background) and then settles down with a crash report. At
that point, the system is either completely back to normal, or partially
OK (the missing aspect being the menu bars of all open applications - in
which case a re-boot is necessary).

The system is running a dual Intel CPUs (E2220 - 2.4GHz) with an Nvidia
GeForce 7100 graphics card. It's a 64-bit install with 4.7Gb RAM.

I have already installed the current nvidia drivers and tried to remove
nouveau but that seemed to have already been removed.

The crash report states:

ExecutablePath: /usr/bin/compiz
ProcCmdline: compiz
Title: compiz crashed with SIGSEGV
ApportVersion: 2.12.5-0ubuntu2.2
ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
SegvAnalysis:
 Segfault happened at: 0x7f963629b960 <__memmove_ssse3+64>:     movdqu 
(%rsi),%xmm0
 PC (0x7f963629b960) ok
 source "(%rsi)" (0x7fcdcd19e000) not located in a known VMA region (needed 
readable region)!
 destination "%xmm0" ok
SegvReason: reading unknown VMA
SourcePackage: unity
StacktraceAddressSignature: 
/usr/bin/compiz:11:x86_64:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+13e0b04:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+12dce1c:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+10b6e91:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+13910f1:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+1191b1b:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+12e431d:/usr/lib/nvidia-304/libGL.so.304.117+70a15:/usr/lib/compiz/libopengl.so+387a1:/usr/lib/compiz/libopengl.so+1e90e:/usr/lib/compiz/libopengl.so+1f2a5:/usr/lib/compiz/libopengl.so+2b9d9:/usr/lib/compiz/libopengl.so+1eeeb:/usr/lib/compiz/libopengl.so+2ee14:/usr/lib/compiz/libopengl.so+25b6a:/usr/lib/compiz/libdecor.so+1c4a9

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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1184451

Title:
  Ubuntu 13.10 random screen freeze while Normal OS activites

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