Hi, I made best progress by using aptitude. However, you have to look at the dependencies yourself.
How to handle: - Start aptitude with ncurses gui. - Mark the required to the former available version. - Look at the dependencies, you my have to set the dependend libs also to former versions - double check, if all dependencies are fullfilled - install Hint: Synaptic offers an option, to save all installed packages with versions in a file. Thus you can reinstall your package state to a further time. Note, that of course the package version have to be still in the repo. You can also save the state of all packages with dpkg if you can not use synatic (i.e. on a server without X), but as far as I know, the version is not been saved with (someone may correct me, if I am wrong here and the version can be saved, too). Hope this helps. Good luck! Best Hans