Windows must go
I've just spent the entire evening, from 20:30 until now, trying to get a windows laptop print on my printer which is now hooked up to a mac mini. It still doesn't work. I think the problem is that somehow the windows laptop makes the smbd daemon on the mac crash. Which can be the fault of either the windows or mac. But I don't care. I sent the file via Skype to my Macbook, and that found the printer right away and printed the doc within 10 seconds. The windows laptop still doesn't print after one and a half hour.
The only thing that has to happen now is the last windows laptop in my home to break.