dub building is extremely slow

[zhmt via Digitalmars-d-learn]

On Thursday, 30 April 2015 at 02:02:50 UTC, zhmt wrote:
> dub build is running on centos7. It works well until today, It 
> becomes very slow suddenly. It will take minuties per 
> compilation, there is 10 files in project.
>
> Has anyone experienced this?

It is because:
The dub will connect to some website to check version of 
packages,but the destination website is limited by my gov,so... 
the compilation is slowed.

solution:

shutdown the network of pc.