My great-uncle, LeRoy Ufkes, passed away on 18 October 2011. I decided to see what versions of the Social Security Death Index contained hisentry as of 8:00 pm (more or less) central time today. Here are the results:
SSDI at GenealogyBank--yes.
RootsWeb SSDI--yes.
Ancestry.com--no.
FamilySearch--yes.
Fold3--yes
Searching the SSDI is free at all these sites.