Most starters I've made do not show any bubbles or krausen (foam) on the surface. I know they are working though because once they start to clear up after 2-3 days I can see a nice layer of cream colored yeast sediment on the bottom, this is a sure sign your starter was active.
I always have some extra dry yeast on hand just in case something goes wrong I don't have to panic.
Next up: Amber Ale
Primary 1&2: 90 Min IPA clone
Primary 3&4: Belgian Wit
Keg #1: White Mosaic Pale Ale
Keg #2: Empty
Drinking: Amber Ale, White Mosaic Pale Ale