A client is trying to use their iMac to print to a printer on a Windows network from Mac OS X, but every single time, it demands network authentication. Even if "save password in keychain" is enabled, it still asks for a username and password every time (and it must be re-entered each time). I can confirm that the same thing happens to me on my MacBook Pro when printing to Windows-based printers. Is there any way to force Mac OS X to remember credentials? Also, a separate problem is happening to a different user on the same site. Each time she enters her login credentials (which are valid, both on her iMac and on the Active Directory network), Mac OS X tells her that authentication has failed and she is unable to print. Any ideas here? Thanks in advance.