After a very long time, I think I have finally settled down on a stable groupware solution. I’ve moved to Kontact and I’m using eGroupware as the backend software.
Now I can access my calendar, notes and contacts from anywhere. The eGroupware web interface itself is pretty sleek, for those times when I have to access data from a public machine and so on.
So far it looks good. There are some minor quirks here and there, but over all I’m quite happy with the setup. KMail’s anti-virum and anti-spam wizard tools are quite funky — and I agree with KMail’s philosophy that spam classification is a specialized task and need not be done by the mail client (as in Thunderbird)