How to stop indexer in Thunderbird 3.0

Thunderbird 3.0 comes with a very nice and powerful global search functionality. For this when you fist start the thunderbird 3.0 after installation, it will try to index all the messages in your your inbox and folders, which will kill your machine and stop you from doing anything else on your machine. If you want to stop that and only want to run the indexer only when you are away from machine  then you can disable the indexing task by going to Tools-> Options..->Advanced-> Uncheck the box "Enable Global Search and Indexer", which will stop the indexing and global search functionality. Note that once the complete initial indexing is done, you don't have to disable this option as the thunderbird 3.0 just does the incremental indexing when ever there is a new mail.