Interesting to note that even Macs have cosmetic bugs. In this case, some bug is triggered the first time a Preview window is minimized, but not the subsequent minimizations. I'm surprised I haven't seen it earlier - of course, maybe it just hasn't happened before. It reproduced on a newly-created account on the same machine, though.
Minimized Preview window looks ugly:

Minimized Preview window looks cute:

FOAF updates: Trust rankings are now exported, making the data available to other users and websites. An external FOAF URI has been added, allowing users to link to an additional FOAF file.
Keep up with the latest Advogato features by reading the Advogato status blog.
If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!