The first evening I had to do a lot of others things, so I didn't really had time to see a lot of bands. I've seen an acoustic show of the White Lies, there weren't much people. There could have been more people, although the Plato is not that big. What I've heard is that White Lies wasn't really great, they have only played 1 or 2 songs that were really nice.
I also had the chance to see the whole performence of the Romanian band The MOOoD (yes, with three 0's). This indierock band was quite nervous before they started as the room "De Beurs" was still empty, and they thought there wouldnt be come much people. The were amazed when the whole room was suddenly full of people, and they've played a good show with super catchy tracks. After the show they'd given away some cd's so that The MOOod would "stay" in Holland.
I must say that I had listened to their music on Myspace beforehand and they've really convinced me. They are not "just" another indieband!