Can you… shut up?

I saw this in one of the computer labs at uni yesterday.
I think I remember him trying to ssh into other people’s desktops just before Christmas and use the system beep to play annoying tunes like Jingle Bells.

I saw this in one of the computer labs at uni yesterday.
I think I remember him trying to ssh into other people’s desktops just before Christmas and use the system beep to play annoying tunes like Jingle Bells.
This semester I’m taking a course where we have to design a fully autonomous robot that can play a 2-a-side game of football.
For this course, we have been designated a work bench and four desktop computers in one of the labs. One of these computers is not configured on the university network and is a standalone machine we have built ourselves (dual booting Windows XP and Ubuntu) - therefore, you cannot use your regular login details on this machine. We usually leave this machine running with the screen locked and a note on it stating that it is not for normal student use (the lab, in fact, should not be used by other students either… but some students apparently still do).
When we returned to the lab on Thursday afternoon, an exchange student had restarted the machine by pressing the power button on the front (the only way to restart it from a locked screen) and attempted to boot into windows and login with their usual university login details. They were sitting at the administrator login screen, looking very puzzled as to why they couldn’t login. We promptly asked them to jump.
We now have a slightly harsher note on the computer screen:
For the last couple of days, there has been a bike left locked to a railing on a landing in the stairs of my block of flats.
Other than getting in the way when trying to climb the stairs and just generally lowering the class of the building, it could pose an issue if there was ever a fire and we had to be evacuated.
I was about to write a polite note to the owner asking them to move it to the locked bike shed provided in the complex, when I saw the following pictures when I got home from uni today. The response by “bike owner” is the best bit. Click the pictures to enlarge.