Unpacking replacement nginx ...
dpkg: error processing /var/cache/apt/archives/nginx_1.4.7-1~lucid_amd64.deb (--unpack):
 trying to overwrite '/etc/default/nginx', which is also in package nginx-common 1.1.19-1ubuntu0.6
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/nginx_1.4.7-1~lucid_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)