Update: After cruising many blogger help groups, getting some great advice from TTI, and also I think feedburner fixed the problem from its end we think we're back to normal. Apparently this happens occasionally...Glad I didn't freak out...too much!
We are experiencing some problems with our posts being delivered to our wonderful subscribers. We are working on this problem from our end and hope google is working on it from their end too. Bear with us - we'll have it fixed soon.