I've tried to download the latest release of Raspbian three times now and each time it it is corrupt.
The SHA-1 checksum does not match at the img file is 807,167,523,358,810 bytes in size!
https://www.raspberrypi.org/downloads/raspbian/
Intervention by moderator:
Everybody who uses a classical unzipped will have problems unzipping a file larger than 4GB, as this image of Raspbian is. You need a (free) unzipper that can cope with ≥ 4GB files, like 7-zip. The problem will probably be solved in the next release, by shrinking the image to below 4GB.
P.S. The problem does NOT inflict the NOOBS installer which is much smaller, so NOOBS installers have no problems!
Mahjongg October 7, 2015