Since I downloaded Skype, strange things started to happen.

First: when I'm watching a video on YouTube. My mouse auto moves to the home icon, and presses it. Even when my hand isn't on the mouse.

Second: The computer opens a stage, smaller version of the note pad and writes stuff to me. While am not pressing anything.

Third: Even after i uninstalled it, i keep on hearing the Skype sounds!

Now I feel paranoid.

lol That sure is interesting. Try running an Anti-Virus and Anti-malware scan.

Da F. Sure Skype doesn't just want your computer? *Writes: Hello vulix. How are you doing today? I want your computer. lol

Do what gnat said.

bro, sounds like you have a hacker, happened to me once, are you using a router and a home modem, and do you have a password on the router?

Whatever you smoke - I want some too ! 0_o

Joking of course, but you sure you ain't high or something ? lol Maybe one of you're friends is trolling you ? Maybe you installed something else, unfamiliar ?

Disconnect your PC from the internet and tell what happen.

"It`ssssss a very nice computer you have there.....shame if something where to happen to it" Thats how your skype sounds like.

See if you somehow have Teamviewer installed and running. Might be your friends or siblings having some fun with you.