Hi illumina,
I'm glad you're still submitting entries. As I've said elsewhere, your treatment of the lettering remains my favorite. I'm glad you've branched away from the padlock, too, as I've grown less fond of that as I see other ideas. Take a look at
#35. The graphic portion is more dynamic with the circle elements around the shield. If you can come up with something a bit bigger than most of your current concepts (possibly over the top of the text like
#46 so it can be comfortably larger since most of your concepts so far have the graphic element no larger than a lowercase letter) and with similar ideas of motion built in (swooshes or whatever), then we may have a winner. An active looking shield is probably better than an active looking padlock, if we're picking between stationary feeling objects.
Good luck!