If you have a problem with your Apache webserver failing to start up properly, and you see this in your error log:
[Tue Dec 04 09:25:54 2007] [notice] Digest: generating secret for digest authentication …
… then it’s possible your machine has run out of entropy. You can test by doing:
… if your screen isn’t filled with garbage, then there’s no more random available.
I fixed this by:
ln -s /dev/urandom /dev/random
No idea if this is the ‘correct’ approach but it worked for me. Posted here since Google didn’t show up anything useful for Debian.