Then all the users are getting a "weighted phrase limit exceeded" error when trying to view any images using google images.
From all the reading i have done so far it looks like i need to increase the phrase limit or clear the http proxy cache.
Endian uses Dansguardian to block sites you want your users shouldn't view. It do so by using either black list or by reading the content of the page or both. It read all the content and add the weight of that "blocked word" into it's table and search the whole page, if the weight of the pharse limit the exceeded limit, It's where it spit the "weighted phrase limit exceeded" messages. To resolve this your can either re-configure the selected phrases or you can increase the pharse limit from under access policy in proxy tab..