I got the following response from vermont center about my I-485 in Feb.
The processing of your petition/application has been delayed. All petitions/applications received by this Service are required to have routine security checks that are resulting in delays of the adjudication. As a result of lack of manpower to complelte the checks in a timely manner, we have no control over how long these checks will take. We can give no definite indication of when they will be completed. We apologize for the delay.
Is there any people in the same situation? Still pending?