I don't have any of those problems.
Perhaps you need to check that you have an official Cd or downloaded from the official website and then md5sum or Sha check the Cd or Usb that you use to install Ubuntu.
1. Overclocking and underclocking. Doesn't this need to be done from inside the bios or by physical changes to the hardware? I've not heard of anyone being able to do this from inside any OS. I agree it would be good if Ubuntu could lead the way on this.
2. If my internet connection drops out i just get a discrete notification and the icon on the top taskbar changes to show i have no network connection. None of that grabs focus and i can keep typing without interference. With crash reports i get a pop-up dialogue just once and have to cancel or allow it (ie it grabs focus). Either way it doesn't appear a 2nd time. The only place i've seen the type of behaviour that MDV described was in Windows, never in any Gnu&Linux.
3. Advertising would be great. Public perception of OpenSource vs MS is generally exactly the opposite of reality.
A good example is that greater numbers of desktop users would NOT increase security problems. Currently malware and remote attackers focus on desktop machines despite that only affecting 1 person at a time and thus being an extremely inefficient method of attacking people. Attacking a server would affect far more people. A single server going down could affect hundreds or thousand of people rather than just 1. The reason we don't see more servers getting attacked and taken down could have something to do with the fact that almost no serious servers run Windows. Servers almost entirely run unix-based platforms such as Bsd or Gnu&Linux.
4. Dunno. I've not tried running Ubuntu on Atoms. However, on extremely low spec machines i have found Ubuntu 12.04 (using Unity) runs a LOT better than 8.04 or 10.04 (using Gnome). 10.04 was fine but 12.04 is better. Few to no crashes and no problems. Windows on the same machine constantly runs into problems.
I've not had nautilus crash when idle even when i have many tabs open and some of those looking at local folders and others at networked file-shares.
So, it sounds to me like MDV either has a corrupted version of Ubuntu or is getting the errors on Windows and somehow think they are on Ubuntu. I would recommend buying some official Ubuntu Cds from the Canonical store and also try re-downloading Ubuntu from the official website. It would be nice to nkow where he/she got the version of Ubuntu from so that we could try to stop corrupted versions from being distributed.