everything is working fine I switched off the device for the first time => Power on=> dim nokia and dim framebuffer, till enter you lock code popped up and it was alright. (dim: the same dim as when you flash ur device)

Did a second power cycle and everything was as it should: Big blue bright Nokia followed by framebuffer and ending with the 5 dots.

So I had the sort of the same strange thing like you the first time... Strange, couldn't reproduce it.