Yes, I'd heard that as well.
Looking at the papers linked to by FSID, the NZ/UK/Netherlands paper (Mitchell EA, Blair PS, L?Hoir MP. Should pacifiers be recommended to prevent sudden infant death syndrome? Pediatrics 2006 May;117(5) :1755-1758.) states that there "have been 7 case-control studies (refs 2?5, 8, and 9 and B. Alm, written correspondence, 2002) and 1 prospective study (E.A.M., unpublished data) that examined routine pacifier use and SIDS, all but one of which (ref 8) observed an increased prevalence of use among the control subjects compared with case subjects. The reduced risk of SIDS with routine pacifier use is significant when pooling the results. Eight case-control studies (refs 2?4 and 6?10) have also examined pacifier use for the last sleep, and all of them showed a reduced risk of SIDS, the significance of which actually increased in all but 1 study when adjustment was made for potential confounders."
Those references to case studies on routine (as opposed to last sleep) pacifier use are
Mitchell EA, Taylor BJ, Ford RP, et al. Dummies and the sudden infant death syndrome. Arch Dis Child. 1993;68 :501?504Abstract] -- does seem to have shown a relationship between routine dummy use and lower SIDS rates, but from the abstract it's not clear whether that was statistically significant, whereas the last sleep figures were.
Fleming PJ, Blair PS, Pollard K, et al. Pacifier use and sudden infant death syndrome: results from the CESDI/SUDI case control study. CESDI SUDI Research Team. Arch Dis Child. 1999;81 :112 ?116Full Text] -- contrary to what the article citing it says, it looks to me as though this one actually concludes that there is no difference between victims of SIDS and control infants in routine use of a dummy for sleeps.
L?Hoir MP, Engelberts AC, van Well GT, et al. Dummy use, thumb sucking, mouth breathing and cot death. Eur J Pediatr. 1999;158 :896 ?901[www.springerlink.com/content/pm1trlht1cunq3f2/CrossRef]ISI]PubMed] -- not clear from the abstract what the figures on routine use, as opposed to last sleep use, were.
Arnestad M, Andersen M, Rognum TO. Is the use of dummy or carry-cot of importance for sudden infant death? Eur J Pediatr. 1997;156 :968 ?970CrossRef]ISI]PubMed] -- According to the abstract, this study does show a strong relationship between routine dummy use amd lower rates of SIDS.
McGarvey C, McDonnell M, Chong A, O?Regan M, Matthews T. Factors relating to the infant?s last sleep environment in sudden infant death syndrome in the Republic of Ireland. Arch Dis Child. 2003;88 :1058 ?1064Abstract/Free Full Text] -- This one is the one the citing article said didn't find a link. It's not clear from the abstract what their figures were.
None of which leaves me knowing a great deal more, at the moment.