It's more confusing than that. WinRT (formally known as "Windows Runtime") is the new API for Metro-style app development. Windows RT is the Windows version for ARM-based tablets.
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I was helping out on a bug similar to this in the 8.04 days. Do you happen to use a Toshiba Satellite Pro?
On Windows XP this is certainly true, but both Windows Vista and Windows 7 have a more sophisticated firewall configuration tool under Administrative Tools. Since the article also talks about server operating systems, I should note that Windows Server 2003 SP1 and later also include this tool.
I came here to say exactly this. It has been a running gag on reddit for some time that whatever is on reddit will be on Digg within 24 hours. It would be funnier if it wasn't so true.
That is because the cache file is stored on your SD card and not in the phone's internal flash memory. A factory reset does not format your SD card. The BGR article was not thoroughly researched.