1. Get the latest version (2.4.0.0 (stable) or 2.4.0.2 (alpha))
2. Could you tell us plz the result of your connection test (accessible under Help >> Connection test)

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</td><td><a href="http://crawler.trillinux.org"><img align="right" style="border:0" src="http://crawler.trillinux.org/img/netsize.png" alt="Network size"></a></td></table>