I-140 Vermont

I had filed my I 140 in July 2007 and the message i have on my USCIS login is

Current Status: Case received and pending.

On September 27, 2007, we received this I140 IMMIGRANT PETITION FOR ALIEN WORKER, and mailed you a notice describing how we will process your case. Please follow any instructions on this notice. We will notify you by mail when we make a decision or if we need something from you. If you move while this case is pending, call customer service. We process cases in the order we receive them. You can use our processing dates to estimate when yours will be done. This case is at our VERMONT SERVICE CENTER location. Follow the link below to check processing dates. You can also receive automatic e-mail updates as we process your case. Just follow the link below to register

But when i check the current processing time for I 140 in Vermont i donot see Vermont processing any I 140. Please advice what could be going around and how long shoudl i take appoximately for my I 140. Thank you.