Ubuntu Synaptic error

dpkg: error: dpkg status database is locked by another process
ming@ming-desktop:~$ sudo dpkg --configure -a
Setting up samba-common (2:3.5.8~dfsg-1ubuntu2.3) ...
dpkg: error processing samba-common (--configure):
subprocess installed post-installation script returned error exit status 10
dpkg: dependency problems prevent configuration of smbclient:
smbclient depends on samba-common (= 2:3.5.8~dfsg-1ubuntu2.3); however:
Package samba-common is not configured yet.
dpkg: error processing smbclient (--configure):
dependency problems - leaving unconfigured
Setting up foomatic-filters (4.0.7-0ubuntu1.1) ...
dpkg: error processing foomatic-filters (--configure):
subprocess installed post-installation script returned error exit status 10
dpkg: dependency problems prevent configuration of samba-common-bin:
samba-common-bin depends on samba-common (>= 2:3.4.0~pre1-2); however:
Package samba-common is not configured yet.
dpkg: error processing samba-common-bin (--configure):
dependency problems - leaving unconfigured
Setting up rsyslog (4.6.4-2ubuntu4.2) ...
dpkg: error processing rsyslog (--configure):
subprocess installed post-installation script returned error exit status 10
dpkg: dependency problems prevent configuration of foo2zjs:
foo2zjs depends on foomatic-filters; however:
Package foomatic-filters is not configured yet.
dpkg: error processing foo2zjs (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
samba-common
smbclient
foomatic-filters
samba-common-bin
rsyslog
foo2zjs