maximum trigger depth exceeded MyObject__c trigger

* The above error is mainly because of the recursive execution of the trigger after update again and again.
* To control the recursive trigger, use if condition or any other controllable steps to avoid the recursion.
Refer:
http://boards.developerforce.com/t5/Apex-Code-Development/Classic-Error-maximum-trigger-depth-exceeded-Opportunity-trigger/td-p/209817