I'm looking to synchronize my PIM data between several computers and devices, but I don't want to share my data with Google or other third parties. I have my own server running Debian.
I run openSUSE KDE on most of my computers (work, home, laptop) and Ubuntu Netbook on my netbook. I have a Symbian S60 phone, but will probably soon get an Android instead. What's the best and most easy-to-setup software I can run on my server, fitting my needs? How do I set it up? I would prefer a single solution for both address book and calendar.