Symantec revealed the existence of a bug in their products.
The problem is that updated files released and time stamped after 11:59 PM on 12/31/2009 are treated as out of date by the endpoint security product. Symantec has a workaround, but weren’t we supposed to have learned our lesson ten years ago? This bug is not putting a large number of customers at risk today. Symantec is simply dating all new definition files 12/31/2009 and giving them new version numbers so users stay up to date. Symantec says they are working on a permanent solution to the problem.
Amazing as it is, others are also suddenly finding year 2010 bugs in their software. Both SpamAssassin and Windows Mobile cell phones are having issues with messages being suddenly marked as from the future — it is likely they are not the only ones.
I guess we did not learn our lessons in Y2K!