Keri Hilson Pushes Back "In A Perfect World" To 2009

Originally expected this summer then before the end of the year, Keri Hilson’s long-in-the-works solo debut, “In a Perfect World,” has now been pushed to early 2009. The set will be released by Zone 4/Mosley Music Group/Interscope. (Billboard)

The Album was originally set for a mid 2007 release, but since then has been pushed back so many times, I've lost track. Why, can anyone give me a suitable explanation on why the album has been pushed back so many times. Just one push back can terribly affect your album sales, talk less of more than 3 push backs. Its always happening to the really good artists, so sad.