Apache22\logs\error messages

[ianpitter]

I am writing programs in php on an XP machine.
Each time I access any php file, the following message is recorded twice:

File does not exist: C:/www/webroot/favicon.ico

Can anyone tell me why this is happening and how to prevent it? It does not prevent the program working but rapidly clogs the error file.

[michaelb]

I think this article gives a pretty good summary, although it seems to have a missing quote in this line:
ErrorDocument 404 "No favicon