RIM BlackBerry Desktop Software 4.7 through 6.0 for PC, and 1.0 for Mac, uses a weak password to encrypt a database backup file, which makes it easier for local users to decrypt the file via a brute force attack.
http://www.securitytracker.com/id?1024908
http://www.securityfocus.com/bid/45434
http://www.blackberry.com/btsc/search.do?cmd=displayKC&docType=kc&externalId=KB24764