Recently, the Roanoke County Circuit Court found a warrant to be facially invalid because it lacked sufficient facts to justify search of the defendant's residence. Despite this, however, the Court found the search to be legal because the searching officers acting in "good faith," believing that the warrant was valid.
This is a pretty big deal. It essentially means that a search is ok as long as officers think it's legal. It will be interesting to see how this case is treated by the appelate courts.
Check out the article here: http://valawyersweekly.com/2014/07/07/good-faith-exception-saves-search/