@yode @J.M. I have created and tested successfully a version of the uploading mechanism that uses a proxy. My understanding is that VPN and proxys are kind of similar but at the same time completely different :)

@yode I have taken a free proxy for my test which consisted of an IP adress and that used a special port. Do you have something similar? If you give me the address of a working proxy, that lets you visit SE, than I would compile its IP address into a small test-function. The test-function will contact SE and uploads a tiny png image. If this works, that chances are good we will get the Uploader working for you.

@halirutan I buy a PAC address in this site first.Then I input my PAC address in my Windows 10 here.

@halirutan If this question can be solved,I will post a new method about uploading or downloading anything express to SE by two custom function.

@Szabolcs I'm not any better than tech support. There are very few instances where I can help anymore more than they can. All I can do is take a look. But I honestly don't know more than you do about parallelism in Mathematica.

@Searke Sorry about not updating the answer yet, I should have (too busy these days). JakobAkkerboom gave the solution above. The integers get too large for machine integers, and bigints are slow to transfer over MathLink.

@Searke So the answer is: The speed is limited by the MathLink data transfer here. It is slow because bigints are being transferred (they don't fit in machine integers). I am a bit surprised though that MathLink doesn't handle 64-bit integers here. Maybe that's because it still needs compatibility with 32-bit processes.

@J.M. Are you around?

anyone around

I'm trying to execute the following from mathematica

Import["!wget -qO- google.com";, "Text"]

in ubuntu 16.04 m10

Look at this craziness:

Looks like a normal octagon, but really it's a polygon with 1070 points

@Szabolcs I am now; too bad you aren't.

@William. Works for me m11, Ubuntu 14.04 and m10.3 same system

@PlaysDice M11 fixed the issue