One single password for accessing files on Linux, Windows and MacOS systems? And then use the same password for logging into the intranet wiki and web-application?

A few years ago this would have required a lot of patching and hacking. Currently available software allows it to implement these scenarios rather efficiently - although it still requires more than a few mouse clicks. But on the other hand this makes working on that kind of projects interesting. If you need support on Kerberos, Active Directory, LDAP, Samba, Apache or the like, don't hesitate to contact me.