221(g) yellow slip at Mumbai

[Sarab]

A very tragic end to my interview. I had gone for H1B visa interview at Mumbai consulate and everything was going well where he asked for BEP letter with two three easy questions which i had and showed him with the perfection, as I am having B1 visa already expiring in 2019 which also I got after admin processing(after 18 days) so this time I was pretty much sure that I will get me visa issued at one go but suddenly VO issued Yellow slip under (221g) without asking any further documents and returned my passport. I am not having First name in my passport so I use FNU instead of it and my main concern here is I am having my passport expiring on 31-07-2013 which is quite near.If they take more than 2 months for Admin processing then it would bring more trouble to me as passport should be valid for minimum 6 months. Can they again issue 221g for my passport expiry and Can I renew my passport in the mean time with my first name and give them a new passport for stamping if they ask me to submit the passport? but my forms have been filled with FNU and i have given my last passport number will it create another problem?

I don`t know why they have again issued me yellow slip as i have already traveled to US before in 2009 for 1 month on business visa and when i already had Admin processing earlier.

Do you think its a name check as my full name is Sarabjeet Singh where I don`t have first name on my passport .

Please suggest how to go on from here? and how I can avoid 221g in future.

Thanks,

Sarab