No I did not try to find out the status of my security checks. I thought I would wait until my Received date (10/18/05) goes a bit beyond the range TSC is processing at the moment.
Fortunately I won't have to do that now. The current posted TSC processing date for EB 485s is Oct. 10, 2005, and it seems that my application was adjudicated very much in their advertised time frame.