Filed I-751 with California Service Center
I just wanted to post my experience with regards to the fee change. I filed I-751 with CSC with a $205 check in the first week of november '06 and received the NOA & biometrics appointment three weeks later. So atleast CSC is not penalizing the applicants for the fee issue.
Also, I received an email from USCIS with status - card production ordered, in the first week of February. And then few days later, in the second week of February, I got another email stating that the removal of conditions was approved. So unlike what has been posted regarding online status updates for I-751, they do work and it does not hurt to register.
And finally I did receive the physical card in the mail. Exactly three and half months since I applied for the removal of conditions on my permanent resident status.