Post
Topic
Board Bitcoin Technical Support
Re: 0/unconfirmed status for about 12 hours
by
theymos
on 22/03/2011, 22:36:56 UTC
Are you referring to the "limitfreerelay", which is planned to be in the next release (Bitcoin v0.3.21)?
  http://bitcointalk.org/index.php?topic=4009.0

The priority system is already in effect, which is preventing those spam transactions from getting into blocks.