Hmm, the assessments are very poor as of yet:
"For people who insist that the movie is never as good as the book, your case just got stronger."
"...overblown so-so suspense flick..."
"There might be a riveting adventure thriller to be made from Dan Brown's controversial bestseller, but this is not it. Melodramatic, overlong and dare I say occasionally boring, Ron Howard's The Da Vinci Code gets lost in the maze of its puzzles and media"
"A polished affair with moments of interest, but simply far too long, too talky and just not interesting or clever enough to engage let alone entertain."
"A jumble of historical myth, religious symbology and international thriller-action makes for an unwieldy, bloated melodrama."
"... a melodramatic, sometimes lifeless film that is missing the suspense of the popular novel."
http://www.rottentomatoes.com/m/da_vinci_code/