Please also read this thread:
http://boards.immigrationportal.com/showthread.php?p=1890870#post1890870
I filed WOM on September 2007 and name check is cleared on December 4th, 2007. Unfortunately, I haven't got green card due to retrogression of the priority date. But if you fight hard, some court will rule in favor of the plaintiffs even if the visa is not available.