Monica:
Any easy fast fix to ease the processor use of cmdagent.exe is as follows:

1) Open Comodo Internet Security window
2) On the home screen, click "Stop all activities" under the Network Defense options
3) Monitor outbound connections -- You should see no more than 1 outbound connection after stopping all activities
4) Click on outbound connection and look for any activity with "Bytes In" or "Bytes Out" activity
5) Right click on these enties and choose "Terminate Connection"
6) Close Active Connection window and click "Resume Activities"

Your problem should then be solved.  The process cmdagent.exe will, at times, become overactive; however, this is NOT a critical problem -- just follow the steps above and you should be OK.

Thanks
Ed