[BioC] biomaRt problem

[Dario Greco]

dear list,
i am trying to annotate some genes using biomaRt, but i am running in the 
following problem:

> library(biomaRt)
Loading required package: XML
Loading required package: RCurl

> mart <- useMart("ensembl")
Error in curlPerform(curl = curl, .opts = opts) :
        Couldn't resolve host 'www.biomart.org'

i have also updated to the 1.7.6 version of biomaRt, but no change in the 
result.

> sessionInfo()
Version 2.3.1 (2006-06-01)
i686-redhat-linux-gnu

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

other attached packages:
 biomaRt    RCurl      XML
 "1.7.6"  "0.6-2" "0.99-8"

i am pretty sure my computer doesn't have any proxy issues. moreover, if i try 
to open the www.biomart.org website in my browser, it appears down.
is there some problem with the biomart mirror? should i use an alternative 
host? if yes, which?
do you have any other suggestions?
thanks in advance for your kind help.
sincerely
Dario

-- 

Dario Greco

Institute of Biotechnology - University of Helsinki
Building Cultivator II
P.O.Box 56      Viikinkaari 4
FIN-00014       Finland

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