[BioC] Failure to update to Bioconductor 2.12 from bioconductor 2.11

[Debatosh Das [guest]]

Bioconductor does not update itself form 2.11 to 2.12 although I am using the latest R version of 3.0.1.
Please help...
Thanks in advance.
D.


 -- output of sessionInfo(): 

> source("http://bioconductor.org/biocLite.R")
Your Bioconductor is out-of-date, upgrade to version 2.12 by following instructions at
http://bioconductor.org/install.
Bioconductor version 2.11 (BiocInstaller 1.8.3), ?biocLite for help
> biocLite()
BioC_mirror: http://bioconductor.org
Using Bioconductor version 2.11 (BiocInstaller 1.8.3), R version 2.15.
Installing package(s) 'Biobase' 'IRanges' 'AnnotationDbi'
Warning: unable to access index for repository http://brainarray.mbni.med.umich.edu/bioc/bin/windows/contrib/2.15
trying URL 'http://bioconductor.org/packages/2.11/bioc/bin/windows/contrib/2.15/Biobase_2.18.0.zip'
Content type 'application/zip' length 2346708 bytes (2.2 Mb)
opened URL
downloaded 2.2 Mb

trying URL 'http://bioconductor.org/packages/2.11/bioc/bin/windows/contrib/2.15/IRanges_1.16.6.zip'
Content type 'application/zip' length 2048190 bytes (2.0 Mb)
opened URL
downloaded 2.0 Mb

trying URL 'http://bioconductor.org/packages/2.11/bioc/bin/windows/contrib/2.15/AnnotationDbi_1.20.7.zip'
Content type 'application/zip' length 4200978 bytes (4.0 Mb)
opened URL
downloaded 4.0 Mb

package ‘Biobase’ successfully unpacked and MD5 sums checked
package ‘IRanges’ successfully unpacked and MD5 sums checked
package ‘AnnotationDbi’ successfully unpacked and MD5 sums checked

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