Implemented: 
Make statistic view more presentable e.g. a table
Add an about field to the menu
Let the user decide about location and format of the exported log file
Show user the location of exported log files 
Notify user that the data has been deleted
Notify user about the status of the database upload
Notify user about first attack in notification bar 
A Session is finished when the application and is terminated or the wifi
changes
When the wifi changes stop active listener and handler 

Bugs fixes(fixed on Android 2.2.1):
When you rotate the device the app crashes.
Switching between windows/apps terminates a current session. (the
session should only terminated when the app crashes/closed)