Problem updating SpyBot

I am using Spybot v 1.3. Up until recently I had no problem using the update feature and downloading the latest detection rules . However, now when I click on Update and try to download the the new detection rules, I cannot do it. I get the following message in the "info" column - "Bad checksum." I do not have any problems running any other program on my computer.
What could be causing this problem and how do I correct it so I can download the latest detection rules update?
Thanks.
Richard

Hello,

Many users have reported that they are not able to download updates. The 'Search for updates' reveals updates, but they cannot be downloaded. Often a 'HTTP Error 403' or 'bad checksum' is displayed. This has a simple reason - millions of people trying to download from the same server, which can't handle such a burden. In combination with the growing size of the detection file this is becoming a serious problem. We are currently considering possibilities to improve the situation. This includes the search for additional servers and ways of more effective compression. At least one server will soon be added, others will follow hopefully.

In order to overcome the problem for now, if you try again, have a second look at the update-menu-bar after searching for new updates. Therefore choose the update site from the navigation bar on the left. Now you'll see the update menu bar. It has a pull-down item to select a mirror. Click the arrow beside it, and select a different location (try the ones locatest nearest to you first), where you'll most probably have better chances to download. For a better understanding we have placed a picture at this link on our website:
http://www.safer-networking.org/en/howto/update.html
In section 4 you'll see how to select a download location nearest to you.

If this sounds too difficult please try to download the updates manually:
http://www.safer-networking.org/en/download/index.html
Here is the direct download link:
http://www.spybotupdates.com/updates/files/spybotsd_includes.exe
Just download and run that file - it is self-installing.

The information about "bad checksum" is also available in our FAQ:
http://www.safer-networking.org/en/faq/20.html

For more information please do also have a look into our forum:
http://forums.spybot.info/showthread.php?t=63&highlight=checksum

Best regards
Sandra
Team Spybot

Thanks

Thank you for the helpful information.
Richard