montcer9012: Windows is the target for malware / adware / viruses and all that crap because it is the most used OS. Besides, most Windows users aren't advances ones and most times those threats are installed because the user allows it.
Linux user's are often more advanced, but if Linux became the preferred OS then it will be plagued for all that threats.
Windows actually isn't the dominant
OS. It may be for desktop computers (
as they insist on a copy of pre-installed windows with it), but there are many devices that use Unix/Linux. Routers, servers, slot machines, tablets, Virtual machines, etc. Windows is just too bulky and bloated most of the time, not to mention you need to purchase a license.
But i don't think we would have the same threats as Windows does. Sure if you consider the android marketplace with the Google Play Store, there are malware disguised as free to play games, or apps, but those are handled/installed in a sandbox way; Removing them are clean and easy that doesn't get interlaced with the OS/system. As you said though, the user has to allow it to install, much less annoying than the
UAC when Vista showed itself.
I especially like the idea of having a filesystem image copied to memory containing the
OS, and is decompressed on the fly as you need it.