I must say it is quite annoying - I am on a super slow internet connection as it is the fastest available where I live. And I was not able to upload and sign. Now I can, but turns out my build just quits. So now I have to wait over an hour to download the new SDK (as it is like the source of the problem) and then upload again.
But if anything goes wrong I won't be able to submit after a 40h no sleep crunch right before I uploaded it the first time.
You guys really should be a bit nicer to those not having a superspeed internet connection ... or tell us right at the start "do not apply".
I actually had hoped to get one more optimization step in, but now all I can do is bughunt.