Rails, my stylesheet disappears magically?

Ok I just started a rails project...when i initially load the page it's styled as it's supposed to be. Without changing any code when I refresh the stylesheet disappears. I figured maybe it开发者_JAVA百科 was a html/css error, but then if i close my browser and reopen it the page shows up fine again. So it's not that. I'm in dev mode so I don't think it's a cache issue. It happens in both firefox and chromium.

Just give Mongrel or Thin a try