I was getting errors into event log when I was trying to update list in which I have written event handler code and again that code was executed from event receiver only, so it goes in loop, sometimes my page becomes very slow.
Solution:
I need to write code which will disabled event firing before when I was trying to update something into same list and then I need to enable event firing after my code.
SAMPLE CODE:
this.DisableEventFiring();
objtem.SystemUpdate(false);
this.EnableEventFiring();
Reference Links:
http://www.sharepoint-tips.com/2006/10/preventing-event-handler-recursion.html
Thank you!