Nice work krake I'd be happy with any of them. I agree that the colour balance has shifted a bit, although given the current background colour the white does ensure the logo stands out nicely. Maybe a v light blue instead of bright white, and the return of the shadows would soften the look and add some style. On the other hand the current logo has a less-is-more okms rzr thing going for it - also nice. Stuff for endless debates..
I suspect more experimenting with the logo and colour schemes will take place over time. Possibly different themes.. I sent Frans a favicon set so hopefully that will appear soon. Because a favicon is often on a white background the contrast between the logo colours is like the original b/w version.