No idea, I can see the cams fine. Oh and btw what are people doing in there on a Sunday?
School work! UAT is a geek school, we spend an inordinate amount of time at school. The computers they have sitting in the commons are more powerful than most machines. For example, the machines you see them playing with are game development machines. For doing game development, they have physics cards in them. These physics cards do realtime calculations for rendering worlds, in terms of how gravity affects certain things. Also, they are used to render short movies, where gravity comes into play.
That said, all the school computers contain all the software needed for all classes, some of which costs over a few thousand dollars a piece. Most students will come in and use the school computers rather than taking the time to try to persuade a company to give them a license for educational use, or pirating it, since UAT tries to persuade students to be good digital citizens. That includes no stealing of software, music, or hacking illegally. Most if not all students try to abide by those standards as a way to show their commitment to the outside world that even-though they have the skills to hack anything out there, they don't need to.
As a side note, on Saturday and Sunday the school has quite a few people coming in also to just be able to work in peace on projects. On a normal school day it gets hectic and very busy, and finding a space to work in peace is usually not possible. Also, some clubs meet on Saturday or Sunday to discuss new game mods, reverse engineering and others. Yet others will come in on Saturday to write some software to control the Christmas tree over the internet