Only a day or two ago, Warner Bros, producer of all HP films to date had released a teaser trailer of the upcoming film
"Harry Potter and the Deathly Hallows: Part 1". Unfortunetly WB reconsidered their choice of putting their trailer on the web, and took it off the web. Most fansites were less then happy about this change of heart, and stubbornly refused to take it off. But most agreed, a little unwillingly, and took the copies of the trailer off their websites.
It is unclear why WB decided after all their effort to put the trailer on the web, just to place it off-limits again.