How long for EAD after biometics?

[munaf_s]

Hi,

I applied on marriage based i 485 on19 feb 2010. I got my biometrics taken on March 18, 2010. how long does it usually take get EAD after biometrics. and also USCIS havent updated my case since march 19, 2010. When should expect that? I applied in chicago center.

Thanks in advance.

Munaf