Workflow on Leads Object is running twice !!

Hello,

My Workflow on leads object is being triggered twice which creates an issue of creating double task. When i created a contact with lead creation, then an error was thrown that duplicate contact detected.

Please find here with the screen shots.
First Process Second Process Only One Created while creating Task with Opportunities Duplicate Detected while creating a Contact with a Lead using same Workflow.
The Workflow rule is just simple. It will be triggered whenever the object is created. There is no recurrsion of any sort used in the Workflow. So this is absolutely not an error of Recursion.