==== Font smoothing on OS X (snow leopard) ====

For some reason, the font rendering on external screens result orrible unless the //light// version of font anti-aliasing method is set in //System Preferences / Appearance //.
Unfortunately, Apple have removed this option from the //System Preferences// pane but there is a command line solution for this. 

Open a terminal and type the following command:
<code>
defaults -currentHost write -globalDomain AppleFontSmoothing -int 1
</code>
or, in order to get exactly the same result as on an Apple cinema Display:
<code>
defaults -currentHost write -globalDomain AppleFontSmoothing -int 2
</code>
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(thanks to Zeno for his always useful hints!)