Comment 24 for bug 553328

Problem still remains (started when upgraded 10.04). :(
Sudo killing the process still leaves the system monitor applet with at least 60% cpu usage, though the processes shown in htop (or top) dont stack up to this percentage... No reboots fix the issue either.

$ ps -eo pcpu,args|sort -rn|head
81.2 /usr/bin/python /usr/share/checkbox/backend /tmp/checkboxcHjiFY/input /tmp/checkboxcHjiFY/output
10.0 /usr/bin/X :0 -nr -verbose -auth /var/run/gdm/auth-for-gdm-EdfrCB/database -nolisten tcp vt7
 9.0 /usr/lib/libgconf2-4/gconfd-2
 4.8 /bin/dbus-daemon --fork --print-pid 5 --print-address 9 --session
 3.7 /opt/google/chrome/chrome --type=renderer --lang=el --force-fieldtest=CacheSize/CacheSizeGroup_3/DnsImpact/_max_2 concurrent_prefetch/GlobalSdch/_global_enable_sdch/ --channel=5101.0x481aa40.291792407
 2.6 gnome-session
 2.0 evolution
 2.0 compiz --replace
 1.6 gnome-panel
 1.5 python /usr/share/system-config-printer/applet.py

$uname -a
Linux ubuntu 2.6.32-23-generic #37-Ubuntu SMP Fri Jun 11 08:03:28 UTC 2010 x86_64 GNU/Linux

$lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
CPU(s): 2
Thread(s) per core: 1
Core(s) per socket: 2
CPU socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 15
Stepping: 11
CPU MHz: 2666.902
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 4096K