I think that the "quietly" argument in "require" isn't working

> require('JumboShrimp', quietly=TRUE)
Warning in library(package, lib.loc = lib.loc, character.only = TRUE,
logical.return = TRUE,  :
  there is no package called 'JumboShrimp'
>

By the way, the behavior is the same with options(warn=0) or options(warn=1)
I'm using R 2.12 (2010-10-15) on a windows 7 machine

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