[R] Unwanted association between a function and a namespace

[p_connolly at slingshot.co.nz]

I can't understand how the plyr package is turning up here:

> sessionInfo()
R version 2.10.1 (2009-12-14)
i686-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] grDevices utils     stats     graphics  methods   base

other attached packages:
[1] lattice_0.17-26

loaded via a namespace (and not attached):
[1] grid_2.10.1 plyr_0.1.9
>

I can understand that lattice would be using grid without having that
package loaded, but I can't understand how plyr got there.

It wouldn't matter if that namespace hadn't become associated somehow
with a function I have somewhere else on the search path (thereby
rendering the function unfindable).  My guess is that if I knew how that
happened, I'd then know why plyr is loaded by namespace.  However, I'm
lost for ideas on how that could have happened.

Suggestions as to where I should be looking greatly appreciated.  Or, even
if that's unknowable, how to remove the association between the namespace
and the function.

TIA

--
Patrick Connolly
Plant & Food Research
Mt Albert
Auckland
New Zealand
~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~
I have the world`s largest collection of seashells. I keep it on all
the beaches of the world ... Perhaps you`ve seen it.  ---Steven Wright
~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~