RD0915,
I'm still using 802-527-4913 to check the status. That and the online status service seem to be in sync. Though the case was transferred to the local INS, I'm pretty sure that VSC is the focal point for all the applications. Also, my case was not transferred for an interview... I got the approval and then went to Baltimore for stamping.
Hope this helps.
-Palaniappan Rajaram