because so many users on gaia right now are in the prom event, and with the little button effects, it creates a lag on your computer because of your graphics/sound card or Gaia because it's servers are being overloaded as thousands of gaians log on to play.
You've got to remember that most of the users are US teens, it's a sat. night *no school here*, so it may be acting like this late into the night.
Give gaia a little patience before you go out to California and rip the Admins heads off.
I'm posting this on Sunday, the last day for Prom Crashers. I've been trying every damned day and they still aren't working. This is getting me so damn pissed. I've waited for about half and hour and "Goal 25%" is still on the screen. I try clicking on the screen and pressing the arrows, but nothing is working. Dammit, they better fix this before the event is over. I want those items.