Although the modifications described in my last blog post about refactoring the GuruPlug resulted in a well working GuruPlug, I've decided to give it some more air to breath at the top of the case. The large round piece of plastic in the middle asked to be removed - and now a shiny 60mm fan grill protects the board from the bad world outside of the case.

GuruPlug Server Plus case with fan grill (1/2) GuruPlug Server Plus case with fan grill (2/2)

So far its working fine and not too hot. Guess I'll see what happens next summer.