[ubuntu] Suspicious listening ports.

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http://ubuntuforums.org – Today I checked my LAN with nmap and found something strange with my machine: Code: PORT    STATE SERVICE    VERSION 80/tcp  open  http      Apache httpd 2.2.14 ((Ubuntu)) |_ html-title: Site doesn't have a title (text/html). Why is there apache running? I never ran a web server and it wasn't here before. When going to localhost in browser, it shows "It works!" page. There are 4 apache2 processes in RAM. apache2 package is installed (perhaps, was a dependency for something?). Is that suspicious? Also, I'm worried that ther (Hardware)