Hi I am using R version 2.4.1. How can I upgrade to version 2.5 without having to install all the packages again? 
Thanks
Jason
 
Dr. Iasonas Lamprianou
Department of Education
The University of Manchester
Oxford Road, Manchester M13 9PL, UK
Tel. 0044 161 275 3485
iasonas.lamprianou@manchester.ac.uk


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now.

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