UK CIOs reported 356 data loss incidents last year! Amongst them:

• 71 memory sticks and CD-ROMs were lost.
• 24 incidents of data being lost by couriers.
• 127 laptops lost.
• 78 incidents where data was disclosed in error.

Source: InfoSecurity Magazine.

Google indexed sensitive data from the IWEPS (“Walloon Institute for Evaluation, Foresight and Statistics“). The following file was available online today: “Budget 2009 IWEPS.xls” which contained personal information like revenues, expenses, salaries, date of birth, gross annual and the cost of allowances.
Source: informaticien.be (French article – Google translation).

The insurance company Zurich UK reported a loss of data tape with customer information.
Source: securite.reseaux-telecoms.net (French article – Google translation)

An interactive timeline has been published by bankinfosecurity.com. It gives a good overview of all data breaches which occurred every month of 2009 (Use your mouse to browser all incidents).
Source: http://www.bankinfosecurity.com/articles.php?art_id=1766.