Delurk, and lualatex.exe

[Samuel Murray]

G'day everyone

I'm trying out various LaTeX editors and I notice that when I run LyX, a 
program named lualatex.exe tries to access the internet.  Why?

I used the 200 MB installer file, which has everything bundled into it, 
and MiKTeX downloaded an additional 12 MB of updates during the 
installation procedure.  But the program lualatex.exe tries to access 
the internet when I run LyX, not during the installation.

Does anyone know what lualatex.exe is and why it needs to access the 
internet?

I'm using Windows 7 HP 64-bit SP1.

Thanks
Samuel