Repeated alerts to allow execution

The Comodo firewall keeps giving me repeated requests to allow rundll.exe to execute the following dlls from Google Desktop:

GoogleServices.dll
GoogleDesktopAPI2.dll
GOEC62~1.DLL

I check allow and remember, but get the same alerts again in a few minutes.  The only way I have to stop them is to use task manager to kill GoogleDesktop.exe

What causes these repeated alerts and how can I stop them?

Set Defense+ on Training Mode and then open Google Desktop. After couple of minutes, change back to the safer level.

  Setting Defense+ to Training Mode stops the alert prompts temporarily.  But once it is set back to safe mode after a few hours the alert prompts start up again.

Add the files manually to the Trusted Files : Defense + > Computer security Policy > Trusted Files > add > brownse files > apply