Sugar administration section loads up sugar news dashlet and this caused annoyance to one of our customer.  I can see how this can be irritating for some users.

Here are quick steps to remove this dashlet:
Go to
modules/Administration/index.php
Go to line 355 and comment out following line:

Not only you will avoid making call to external site but also [...]

There are several categories of users in SugarCRM. The very first is the Administrator which governs all the activities in the application. The Admin handles the issues like User Management, Role Management, System wide settings, Configurations settings and Email options. While creating the user admin can create user which he can assign the admin rights [...]

SugarCRM seamlessly blends all the functionality required to manage information on many aspects of your business into an intuitive and friendly tabbed user interface.
Some of the features are:
Customer Relationship Management:

Account creation and management with any number of Contacts associated with each Account.

Activity history (Meetings, Calls, Tasks and Notes with optional file attachments and Emails) is [...]