two processes that don't seem to stop when logging out

[Clint Harshaw <clint@xxxxxxxxxxxxxxxxxxxx>]

When I log out as a normal user (there is only one non-root user on this 
machine), and log in as root, there are still two processes that show up 
with me as a user:

charshaw  3213     1  0 10:10 ?        00:00:00 
/usr/libexec/bonobo-activation-server --ac-activate --ior-output-fd=19
charshaw  7577     1  0 16:13 ?        00:00:04 /usr/bin/artsd -F 10 -S 
4096 -s 60 -m artsmessage -l 3 -f

Is this anything to be concerned about? Why are they not stopping when I 
log out? Should I kill them?

Thanks,
Clint