I brewed a Raushbier 48 hours ago and have no airlock activity yet. The smack pack yeast I used was dated 11/07, and seemed to be puffing up nicely when pitched. I've been brewing for 4 years and this is a 1st for me. I dont usually brew from kits, but this was a X-mas gift. I have plenty of yeast on hand. Should I add some now or am I panicking? I always make starters because I brew 15 gallon batches. Darn kits.