I keep getting postgresql-9.1 errors towards the end of just about any installation. Is this something to be concerned about? Please see below:

Setting up postgresql-9.1 (9.1.9-1) ...
[....] Starting PostgreSQL 9.1 database server: main[....] The PostgreSQL server failed to start. Please check the log output: 2013-04-13 03:02:51 UTC LOG: could not create IPv6 socket: Permission denied 2013-04-13 03:02:51 UTC LOG: could not create IPv4 socket: Permission denied 2013-04-13 03:02:51 UTC WARNING: could not create listen socket for "localhost" 2013-04-13 03:02:51 UTC FATAL: could no[FAILate any TCP/IP sockets ... failed!
failed!
invoke-rc.d: initscript postgresql, action "start" failed.
dpkg: error processing postgresql-9.1 (--configure):
subprocess installed post-installation script returned error exit status 1
Setting up less (444-4) ...
Setting up bundler (1.1.4-6) ...
Setting up liberror-perl (0.17-1) ...
Setting up git-man (1:1.7.10.4-1+wheezy1) ...
Setting up git (1:1.7.10.4-1+wheezy1) ...
Setting up rubygems-integration (1.1) ...
Setting up metasploit-framework (4.6.0-1-1kali1) ...
Errors were encountered while processing:
postgresql-9.1
E: Sub-process /usr/bin/dpkg returned an error code (1)


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Setting up apache2 (2.2.22-13) ...
Setting up libdpkg-perl (1.16.10) ...
Setting up dpkg-dev (1.16.10) ...
Setting up kali-menu (1.333) ...
Processing triggers for menu ...
Processing triggers for python-support ...
Errors were encountered while processing:
postgresql-9.1
E: Sub-process /usr/bin/dpkg returned an error code (1)