I used a Wyyeast smack pack for the first time yesterday. The package wasn't brand new (purchased in May) so I wasn't surprised that it didn't seem to bulge all that vigorously, but it did a bit. I put it into a starter, and 24 hours later it has very little activity and certainly doesn't have a krausen layer on top. Just a few bubbles here and there. I'm wondering if because it was a bit older it might just be taking longer? Any thoughts?