The Swedish authorities have succeeded in taking it down by threatening their ISP with a large fine. The Pirate Bay is one of the more popular torrent sites out there, and also probably the biggest public tracker of torrents (openbittorrent tracker is also down).
http://torrentfreak.com/the-pirate-b...rities-090824/
It'll probably be back up again in a few days, but it may be tough(er) to get any torrents until then.
The ISP, Black Internet, has since reported "sabotage" and has called in police help:
http://torrentfreak.com/ex-pirate-ba...police-090825/