What temp are you fermenting at? The first lager I made took a little over 24 hours to start. The Helles I've got going right now started within 12 hours, but that was with a massive starter.
What temp did the package say to rehydrate at? I have no experience with dry lager yeast, but when I use S-05, I rehydrate a lot warmer than that (around 90º I think).
Tap 1: English Dark Mild Tap 2: American Brown Tap 3: American Amber Tap 4: Sour Belgian Brown Tap 5: Nitro Milk Stout
Kegged: Amber, Brown, Milk Stout
Lagering: Vienna Lager