I receive many "WARNING Calculated flow delay for X at Y for Z". Should I worry?

A: Right now, this is expected and a known cause for high latency in GNUnet. We have started a major rewrite to address this and other problems, but until the Transport Next Generation (TNG) is ready, these warnings are expected.

Is there a graphical user interface?

A: gnunet-gtk is a separate download. The package contains various GTK+ based graphical interfaces, including a graphical tool for configuration.