Today I upgraded the Joomla! back-end to version 2.5. The long expected new stable for 1.5 years release of Joomla. I had some issues with the upgrading because of proxy problems, so I downloaded the upgrade package, unzipped it and uploaded it to the web site with FTP. And it all seems to work! Now I can go and upgrade all other web sites I maintain (work and private) to this version. Especially all modules and the templates will be interesting to see if it all works. Migrating 1.5 sites towards 2.5 is for several sites a mega operation.