unmet dependencies: postgresql-contrib-9.1

[robert rottermann]

On 17.08.2014 21:10, Noah wrote:
> Preparing to replace postgresql-9.1 9.1.13-0ubuntu0.12.04 (using 
> .../postgresql-9.1_9.1.14-0ubuntu0.12.04_amd64.deb) ...
>  * Stopping PostgreSQL 9.1 database server           * Error: Could not create 
> log file /var/log/postgresql/postgresql-9.1-main.log
could this be a permission problem?

robert