SYNC Blockchain Bootstrap (Block 8400) - http://d-h.st/ZL2

Bootstrap up to the 8400 block, since were trying to get you resynced...

Delete blk001.dat from your appdata/sync folder, paste bootstrap.dat into the same folder and start your client.

You can also rename bootstrap.dat to blk001.dat and restart the client, but it should pick it up as bootstrap.dat

p.s. once the blockchain gets big enough to make a blk002.dat file as well and so on and so on, I'll have to concatenate each of the blkxxx.dat files to bootstrap.dat, so you'll just have to drop bootstrap.dat in and start the client, should pick it up fine, but for now you can even rename it to blk001.dat.