My EAD experience
1st I485 based EAD, VSC
ND:10/21/04
AD:12/21/05 (on-line message, valid from 12/17/04-12/16/05)
On 1/10/05, called VSC because didn't receive EAD (and never received it), the mailing address is correct, asked to wait for 30 days.
1/22/05, went to Philadelphia USCIS...