Install Status.net CMS.

It will need curl. So check your phpinfo(); run your Terminal,input

#sudo apt-get install curl libcurl3 libcurl3-dev php5-curl

And then, Reset your apache.Input 

# sudo /etc/init.d/apache2 restart

If you still have problem，edit your php.ini file (It could be in /etc/php5/apache2/php.ini ,you can search it with Terminal , input #locate *php.ini*  ) add it at the last blank:

extension=curl.so

Save your php.ini and reset it again.