So, I recently upgraded to Ubuntu 9.04 and after by first boot was notified that the built-in search module is going to go ahead and index my files for faster searches. Fine.
But after a few seconds the Tracker got back at me and said something about my index being corrupt. It asked if I wanted to re-index everything again. Fine.
Apparently the index was still corrupt, so I gave it a bashing.
Fire up a terminal and enter the following commands to fix this minor annoyance:
sudo apt-get install tracker-utils
tracker-processes -r
The first command installs the utility you will need for the second command. Suffice to say, Ubuntu works fine now.
Author: Tanin
Tanin in an information technology consultant specializing in complex heterogeneous environments. He can be reached through multiple social networking sites including Twitter.
Unlike some other people I could mention, I will refrain from referring to myself in the third person. My name is Tanin Ehrami. You may know me from such plug-ins as 
Hello,
Thank you for an advice.
Thank you!! It’s so rare that you find an answer rather than another question.