readRAST6: too many open files

We're using
rastdum <- readRAST6("nomdum",cat=F,ignore.stderr = T)

(on a ubuntu 8.10 machine and R 2.9)
within a for() loop of hundreds of iterations.

At some point (ca. 199) we get an error
"Too many open files"

and suspect that this is because readRAST6() is opening
and not closing files. Is this a bug? I remember having
a similar problem with writeGDAL() on a win machine a long ago,
but that problem was fixed.

Thanks

Agus

Dr. Agustin Lobo
Institut de Ciencies de la Terra "Jaume Almera" (CSIC)
LLuis Sole Sabaris s/n
08028 Barcelona
Spain
Tel. 34 934095410
Fax. 34 934110012
email: Agustin.Lobo at ija.csic.es
http://www.ija.csic.es/gt/obster
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