rangav,
It might not be a bad sign after all.
I was in a similar situation and would advise this:-
keep all your documents ready :
Employment letter, last 6 paychecks, last three w2/tax forms, medical etc. Send it as soon as you receive the RFE letter.
Normally if everything is clear(security chk. etc) and your file is still open(it probably is) you might be approved in two weeks of RFE receipt.