Hi,
I have notice as we trial KNIME 2.6 in a corporate network that if KNIME cannot access the external internet, when KNIME starts up it shows the Tips and Tricks box as an empty white window which just looks strange.
It may be a good idea for KNIME to recognise when it cannot access the internet, and instead recall from a local text file in the install folder which contains Tips and Tricks. This way although the Tips and Tricks are not the most up to date from your server, at least some Tips and Tricks will be shown which are as up to date as the most recent KNIME build on the machine.
Simon.