Hi chrisi, and thanks for the tip!
The icon for bittorrent is a Nazi occultist symbol called the "Black Sun" ("Schwarze Sonne" in German).
You are of course right - i even know the symbol but have never made the connection. It is one of the original BLAG icons used for bittorrent and for a couple of other obsolete icons. No idea why and with what intention it was made, perhaps some satirical reference that has since gone lost.
As the black sun is very closely associated with nazi so-called mysticism, i also suggest removing it entirely - a new package of the little guys icons is uploaded to riseup: http://ur1.ca/6016k
and i have made that page public for easier access.
@junichiro: Can you change the bittorrent icon on http://www.blagblagblag.org/90000/features/internet.html
If someone knows the story behind using the symbol for BLAG icons, feel free to clarify.