Dirk,
Below is my original mail, a question i sent yesterday. I wanted to upgrade R but for some reason this didn't work.Your response to this e-mail was: try the rstudio mirror or some other. This didn't work, meaning i couldn't upgrade R. 
As you probably didn't have this first question in your mail history, it didn't make sense. Sorry for this.
Finally, i could upgrade R with this line:sudo add-apt-repository ppa:marutter/rrutter
Best,Martin


Hi,
I'm having some issues upgrading R. I'm using ubuntu linux 13.10, saucy and would like to upgrade R to the new version.I'm currently using 3.0.1
I've been following the instructions given in:1. http://stackoverflow.com/questions/10476713/how-to-upgrade-r-in-ubuntuand2. http://cran.r-project.org/bin/linux/ubuntu/

Here is exactly what i did, following mostly the stackoverflow description:
1) Added the cran mirror link to the sources list(I've actually tryed with 3 different mirrors just in case)sudo gedit /etc/apt/sources.listdeb http://cran.cnr.berkeley.edu/bin/linux/ubuntu/ saucy/
2) Getting the key step gpg --keyserver keyserver.ubuntu.com --recv-key E084DAB9gpg -a --export E084DAB9 | sudo apt-key add -
3) Run the updates/upgradessudo apt-get update && sudo apt-get upgrade
After a large list of succesful updates i get the following result in the terminal:

W: Failed to fetch http://cran.cnr.berkeley.edu/bin/linux/ubuntu/saucy/InRelease 
W: Failed to fetch http://cran.cnr.berkeley.edu/bin/linux/ubuntu/saucy/Release.gpg Cannot initiate the connection to cran.cnr.berkeley.edu:80 (2607:f140:0:8000::201). - connect (101: Network is unreachable) [IP: 2607:f140:0:8000::201 80]
W: Some index files failed to download. They have been ignored, or old ones used instead.Reading package lists... DoneBuilding dependency tree Reading state information... Done0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

I've done this a few times. At this point there are no more updates and the R error is isolated.
Is there a solution to this or should i just re-install R.
Thanks for your time,
Martin
> Date: Fri, 18 Apr 2014 14:54:56 -0500
> To: belmartin@outlook.com
> CC: edd@debian.org; r-sig-debian@r-project.org
> Subject: RE: [R-sig-Debian] Ubuntu 13.10 - not able to upgrade R
> From: edd@debian.org
> 
> 
> On 18 April 2014 at 16:39, Martin Bel wrote:
> | I've tried a few different mirrors before, including the rstudio one. 
> | To be sure i've tried again with the one you provided, but didn't work.
> 
> We can't really help you at the granularity of "didn't work": What did you
> try?  How did it fail? What were the errors?
> 
> Maybe read some of the HOWTOs on the web about 'how to ask a good question'
> as eg this classic variant: http://www.catb.org/esr/faqs/smart-questions.html
>  
> | I've found this other method, that worked. I guess it's not the official one,
> | right?
> | 
> | 
> | sudo add-apt-repository ppa:marutter/rrutter
> 
> Yes that is a different repository from the CRAN repository. They are related though.
> 
> I honestly do not know what your question is.  Thousands of people _use_ the
> CRAN Ubuntu repo happily.  Maybe you just need to re-read the README...
> 
> Good luck,  Dirk
> 
> -- 
> Dirk Eddelbuettel | edd@debian.org | http://dirk.eddelbuettel.com
 		 	   		  
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