[R] same random numbers in different sessions

[Liviu Andronic]

Dear all
I'm using Xubuntu Lucid and I keep getting the same random numbers
whenever I start a new session of R. For example, I keep getting
> sample(1:1000, 1)
[1] 87

or
> rnorm(1:10)
 [1] -1.3618103  0.4241701  1.0720076  0.2208145 -0.5375314 -0.4846588
 [7]  0.7576768  0.6527407 -0.6868786  0.8718527

I expected that some set.seed() instruction woudl be present in a
config file in
/usr/lib/R/etc/

but after grepping the only reference came out in Rprofile.site and it
was commented out:
# set.seed(1234)

What else could be causing this? Regards
Liviu

> sessionInfo()
R version 2.11.1 (2010-05-31)
x86_64-pc-linux-gnu

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
 [5] LC_MONETARY=C              LC_MESSAGES=en_US.UTF-8
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
 [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] fortunes_1.4-0 sos_1.3-0      brew_1.0-3     IPSUR_1.1


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