Since a few weeks we have a strange effect on one of our two squids. (2.5 stable3) We start Internetexplorer and try to open an URL in the internet. In result I get the authentication window (we authenticate agains LotusNotes via LDAP) I type in the correct username/password and get the restult: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Error The requested URL could not be retrieved While trying to retrieve the URL: http://........ The following error was encountered: * Access denied. Access control configuration prevents your request from beeing allowed at thsi time....... >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The funny thing is, that if I press F5 it will load the page. This error appear only one time for each newly opened browser window, but it doesn' appear everytime. Usualy the notesserver writes a message to the console if there was an authentication with a bad password, but in this case there is no notice, so I think squid does not ask Notes at this point or it asks and find the password correct (most likely). Any Ideas? Kind regards Stefan Vogel