NMAP shows local machine as down

[micro dev <microdev1 () yahoo com>]

Hi,
I am having this strange problem.
When I poll ONLY my local machine thru NMAP, NAMP succeeds.
 
But when I poll a range of IP addresses which has my local IP address also,
NMAP does not come out with any results for my local IP.It reports my local machine as down.
 
Where can be the problem.
 
I am using nmap V. 3.00.
Also winpcap version is 3.0.
My local machine is Windows 2000 server and has 4 CPU.
 
Thanks
 
 


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