I’m having the same problems and I’m running a wordpress.com blog–myhusbandcooks.wordpress.com. It stopped working for me about 20 days ago. I contacted Technorati after about 10 days and they were able to update my content, but then the same thing occured since. Its now been over a week since Technorati updated me through customer support and still no results. I was manually pinging before and since, but no luck now. I’m waiting to hear back from them a second time and I’ve also included this thread in my recent ask for support.
I’ll keep people posted if this is still a problem.