Christian, Hear, hear! That's the most sensible statement I've seen about bokeh.
Overlooked your answer - Well I came to this out of my practical experience, the bokeh in my images always looked decent, it was just never so important for me, or so bad like in the images here.
And I must say Olaf has a strong point here. Although I was aware that my lenses produced very different bokeh for all sort of settings, scenery and light, I never really thought about it so much to actually draw the conclusion he wrote. (And probably could not have said it so good...) For example, I was always pleased that for its price, the 18-55 Kit from Canon has a very good bokeh in Macro situations. But NOW I would not be surprised if someone pointed out that pretty much ALL macro images have good bokeh in most situations. So for Kikashis case that would mean, the lens is not worse or better then any other sample, instead the particular shooting situation was just bad. I think thats the point Olaf was trying to make.
//edit: Overlooked, not oversaw