A leap second is being added at midnight tonight, June 30 2012. VFP (and probably most of the world's software) doesn't handle it properly:

gt = {^2012-06-30 23:59:59}
?gt + 1 && returns 2012-07-01 00:00:00
* It should return 2012-06-30 23:59:60

Just a little something (i.e. huge can of worms) to be aware of if you need second-accurate time calculations that span the leap second.

Some systems are weirdly affected and may crash. For instance, the last leap second caused the SlashDot web site to crash: http://it.slashdot.org/story/12/06/30/2123248/the-leap-second-is-here-are-your-systems-ready