What is this(virus or anything else)???

[Amir.php]

When i connect with internet , In the right side of the Task bar My avast Email Scanner Detect something suspicious.

svchost.exe

I cannot kill this process because the svchost.exe is windows process and there are many instance of this exe running con currently running in my system(11). And My CPU usage is 17%
Please anyone suggest what i need to do.
I have scanned with avast professional but no virus detected.

[Pratul_09]

Download and install a firewall like zone alarm or comodo free one and then monitor the ports for intrusion. This will help in knowing the incoming and outgoing connections made during using internet.
This may be a type of DOS(Denial of Service) attack, which are made in order to stop proper functioning of the host that is attacked.

[mrintech]

http://www.personalfirewall.comodo.com/