...

This will reset the password to admin.

General

I am not getting expected new violations in the differential views of drill-down?

3 reasons can explain this:

...

Failed to analyse a project as another analysis on the same project seems to be running at the same time (Sonar 3.4 only)

In Sonar 3.4 (SONAR-3306) a new semaphore mechanism has been introduced to prevent launching several analysis on the same project in parallel. But in some cases when an analysis of a project is unexpectedly interrupted, the lock of the semaphore is sometimes not released and in such case it's up to the Sonar administrator to relaunch the project analysis with the property 'sonar.forceAnalysis=true'. This limitation has been fixed in Sonar 3.5 (SONAR-4053). 

How to remove false-positive violations?

...