an update has been issued for PDF xchange here is the info:

"Important Security Update issued 30 December 2009:

PDF-XChange Viewer Product Range  update to release 2.044 recommended.

After consultation with Secunia Research (»www.secunia.com) Tracker Software Products Ltd has issued an update to all versions of its popular Free/Licensed PDF-XChange Viewer product family including both end user and developer product ranges.

On December 29th 2009, Secunia notified Tracker after testing, of the potential for malicious code to be executed to compromise users systems via PDF files, using a very specific means - though no such exploitation is known to have occurred to date, we felt we should act with some urgency to protect our clients.

Within 24 hours we are pleased to confirm an update was issued to all products blocking any such opportunity and all clients and developers are urged to update any versions of our PDF-XChange Viewer product to ensure that their systems are safe guarded.

All PDF-XChange Viewer and Viewer SDK versions prior to release 2.044

should be updated to a later release.

The PDF-XChange Viewer (FREE or PRO) is also offered as part of the PDF-XChange Lite,

Standard and PRO, and PDF-Tools product bundles - users of these products are urged to

update therefore also.

Developers using the PDF-XChange Viewer ActiveX SDK are urged to also update their clients

systems as soon as practical with a later release of their products incorporating the Viewer

SDK Version/Build 2.044 or later.

A full system uninstall, restart and re-install is recommended using downloads from the page

links below:

End user installer options:

»www.docu-track.com/downloads/users/

Developer SDK installer options:

»www.docu-track.com/downloads/dev/

Please rest assured we take the integrity of our clients systems and enviroment

very seriously and strive to ensure our products are of the highest quality on every level."

this is excellent response time! much fewer vulnerabilities are out there hitting this viewer but they are very fast to patch when there are.

also of note there are more pdf infected files right now so it is advisable as always to not open any pdf file in your browser but instead to save to disc, scan them with your updated antivirus and updated malwarebytes before opening them.

here is a link to info about how Fox sports page is spreading infection, gumblar is involved which is one that does infect pdf also.

Fox Sports Web Site Compromised