eb2 pd current, AoS wait period ?

[niagarafalls]

Hi Murthy attorney or other experts,

my eb2 is current based on June visa bulletin, my PD is Aug 11 2006 and service center is NSC.

i485/140 filed concurrently in july 2007.

on the uscis website,

processing time for EB applications::

NSC shows '4 months'

& TSC shows 'September 6, 2010'

does this mean that my 485 approval will happen in 3 to 4 months.

also per the murthy forum posts, majority of june bulletin 485 approvals are from TSC.. is NSC slow...

when can I expect my 485 approval, please reply.

Thanks

[niagarafalls]

anybody ??