Today i updated WP to 2.8 & NGG to 1.3.2. By checking the gallery i discovered some galleries that displayed twice. I don´t know why it happens. It regards only to one album that contains 3 galleries. All other albums work fine. You can see it here. Take a look at a gallery in Saison 2008-2009. The galleries are displayed twice. For comparison take a look at the galleries at the album 2006-2007
I hope someone could help me.