Text is too small and the dark orange text colour seem to sink into the background making it difficult to read without pressing your nose up against the screen. People wont read your site if they cant see the text
2- The section buttons suffer a bit in the same way. When rolling over them the background colour of brown makes the black text difficult to read.
3 - The brownish surrounding border doesnt work well with the centre part of the screen which is blue. Might work better with an allover blue front page.
What do I know, I'm no web designer but I have learned that light clean pages work better than dark contrasting ones.