Adobe has released two updates expected to address the JPEG bug disclosed last week by Lightroom Product Manager Tom Hogarty.

The bug, discovered by Doug Cooper, corrupted images with an "unusually large block of private camera data," Hogarty explained while noting they had only found one camera, the HP PhotoSmart R607, to be susceptible to it.

In announcing the problem, Hogarty promised updates by Friday, May 27. The company has released those updates two days earlier than expected. While the LIghtroom update mentions the JPEG bug, the Camera Raw update, which adds support for a number of new cameras, does not.

However, Adobe's John Nack noted on his blog today, "These updates for Camera Raw Lightroom fix the rare but potentially serious file corruption bug that was introduced in Lightroom 3.4 and Camera Raw 6.4."

Lightroom 3.4.1

According to the company, the Lightroom 3.4.1 update includes these enhancements:

• Additional camera support for several new camera models including the Canon Rebel T3i, Nikon D5100 and Fuji FinePix X100

• Corrections for issues introduced in previous versions of Lightroom 3

• The Lightroom 3.4.1 update includes an important correction for a bug introduced in the Lightroom 3.4 release

Mac download: http://www.adobe.com/support/downloads/detail.jsp?ftpID=5112

Windows download: http://www.adobe.com/support/downloads/detail.jsp?ftpID=5113

Camera Raw 6.4.1

Adobe also released a new version of the Camera Raw plug-in to replace the original Camera Raw plug-in installed with Creative Suite 5 or Photoshop CS5 software.

Support for the following cameras has been added in this update:

Canon EOS 600D (Rebel T3i/Kiss X5 Digital), EOS 1100D (Rebel T3/Kiss X50 Digital); Fuji S200 EXR, F550 EXR, HS20 EXR, X100; Hasselblad H4D-40; Kodak Z990; Nikon D5100; Olympus E-PL1s, E-PL2, XZ-1; and Samsung NX11.

Mac download: http://www.adobe.com/support/downloads/detail.jsp?ftpID=5104

Windows download: http://www.adobe.com/support/downloads/detail.jsp?ftpID=5111