It looks nice, colour scheme fits in well with your site.
Firstly, I would change the colour of the folder icons from the default pink and yellow to a more matching set to your colour scheme.
Also, IMO the hover colour is too bit a contrast to the base colour, it looks rather too dark.
In 800 x 600 the site is too wide and has a scrollbar, plus the username and password box is obscured off the right hand edge. You might want to think about cutting down on those dropdowns and removing the moderators column.
Hope some of these suggestions help
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