Shortly after Mike posted his article about German banks experiencing Y2K fashionably late with their 2016 glitch, two more great 2010 bugs came across my desk:

SpamAssassin Loses Its Mind – Marks Everything as Spam
SpamAssassin filters spam on thousands of email servers around the world, blocking millions of emails you don’t want.  And as of January 1, 2010, it also blocked all the emails you do want.  You see, one of SpamAssassin’s rules blocks emails that were sent from the distant future because some spammers use that tactic hoping they’ll appear at the top of your inbox.  For years now, that rule has hard coded January 1, 2010 as the cutoff date for emails – meaning anything with that date or later was flagged as spam.

If you run SpamAssassin and are wondering why you haven’t received any emails lately, you should probably update your software.

Symantec – Have You Updated Lately?  What About Now?  Now?  How About Now? I Don’t Believe You.
For reasons that are not clear, Symantec’s Endpoint Protection Manager product believes that any virus definitions received after December 31, 2009 are out of date.  Of course, it would really like you update your obsolete definitions even though they’re perfectly fine.  A fix is apparently in the works, but workarounds have already been posted.