[BioC] Problems with BioConductor

[Alexandra-mariela Dumitru]

Dear Madam/Sir,
I am a user of the R programm at the BF2i laboratory in Lyon. We are doing
research on the microarrays, and use BioConductor for analyzing our results. I
have installed the new version of R 1,9,1 and wished to install the new version
of Bioconductor too. The coputer I am working with is a Mac and fulfills all
the demanded caracteristics of the installation. But I have encountered some
problems while downloading the libraries. Libraries like marray and some other
are downloaded but "cannot be installed for they are not in any repository". I
would appreciate if you could help me solve this problem.
Sincerely 
Alexandra DUMITRU