Latency issues on local development server I do craft development on a local setup (using a virtual .dev host). The one very annoying issue I experienced is a large latency (~10s) I get while using the backend – f.e. saving an fresh entry or creating a new field. The latency vanishes as soon as I disconnect from the internet. Is there any "call home" function build into craft that causes the delay?
In the end I resolved my problem - which was unfortunately not related to craft at all. For unknown reasons there it was just quite evident visible. 

Facts:
I'm running MAMP on a local OSX (Yosemite) setup. My craft website is running on a virtual domain pointing to localhost. 
PHP 5.4
Mysql 5.x
Craft 2.3.26 Pro version

Issue:
Long latency (~10s) when editing an entry/adding stuff.

Solution:
In the end it was related to OSX issues with resolving a vhost address and resulting in loopbacks. A detailed description of the issue und how to resolve it can be found on stackoverflow.