Proxy Error

When you see the following message:

Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /perl-bin/animedb.pl.

Reason: Could not connect to remote machine: Connection refused

When trying to reach AniDB.net don't panic!
Whenever some updates to AniDB get uploaded it will reply with that error for a couple of minutes/hours, depending on the size of the update.