There have been several threads started on PATF, and the comments I've seen here have been overwhelmingly positive.
I saw it Saturday, and enjoyed it a lot, particularly the songs, and the main characters (really liked Tiana and Naveen, individually and as a couple, froggy and human). I'd give it a B+, the story gets a bit cluttered and convoluted, and not all the slapstick worked for me (they could have left out the frog hunters), but I would certainly recommend it to fans of classic Disney animation.
I wouldn't let one person's opinion (pro or con) put you on or off of seeing the movie; we all have different takes on things. "Up" is my favorite movie of this year (and the last several years), I give it an A+++ and think everyone needs to see it, but there were several posters this summer who hated it. Everyone has their own taste.