As long as its fermenting and finishes up close to where it should then I wouldn't worry about it.
Sometimes I don't get much krausen, sometimes its rushing out the blowoff tube. Like I said, no biggie as long as the yeast do their job.
EAC - 5/2/14
Growing Hops in Key West, FL....
Primary : London System Southern English Brown
Primary : Queen Ann's Revenge IPA
Primary : Soon To Be Filled
On Tap : Muddy Waters Bourbon Mocha Stout , Mosaic Cream Ale
On Deck : Barley Legal 99 ABW
*Member: The HBT Sweaty Fat Guys Cigar club