It should mean that they found what is called a 'cloud' on the title, this could be a lien by a sudcontractor, HOA, tax lien or other problems that may have shown up after the foreclosure.
It could also mean they have a problem with the foreclosure process that was done.
Time that is the fifty dollar question, it be a week 3 months or never, if it's the property you want just hang in there and call or email the listing agent or auction company to get updates.
Take time to explore my profile located here on Trulia: http://www.trulia.com/voices/profile/Real_Estate_Pro-Orlando
and my website: http://two4oneoforlando.com
Dave Lowe, Broker Two4One of Orlando
GRI â€“ ePRO â€“ GREEN (Designations)
Innovative / Save Money / Great People