"File server resource manager" take 100 % CPU of 2 Cores

Hi,

When I start my Worker Roles (Medium) I see there is a svchost.exe that is taking 100% of CPU.

After I check the PID I notice that is the "File server resource manager", after I wait for 40 minutes I just end process using the task manger.

The last code that I runned was:

using (Process exeProcess = Process.Start(startInfo))   <---------------- a.exe
 {
   EventLog.WriteEntry("Application", exeProcess.StartInfo.FileName);
   EventLog.WriteEntry("Application", exeProcess.StartInfo.Arguments);
   EventLog.WriteEntry("Application", exeProcess.StartInfo.WorkingDirectory);
   EventLog.WriteEntry("Application", "Before Wait");
   exeProcess.WaitForExit();   <-------------------------------------------
   EventLog.WriteEntry("Application", "After Wait");
   Thread.Sleep(2000);
 }

the a.exe that I'm calling will do something and then he will start other b.exe and c.exe.

I see in the process list the a.exe is running but only consuming 1% of CPU and the svchost.exe is at 99%-100%, after I close the svchost.exe I see the a.exe get 50% of CPU but never calls the b.exe and c.exe.

I'm using osFamily="1" osVersion="*" 

Anyone know what is happening ?

Thanks

Rui