We have a couple of Mac's on our Windows network. Well, they are problematic at best. The users experience extreme slowness at times and difficulties printing via email. I just got off of the phone with one of the Mac users who was trying to print an email. After clicking on print, she had to wait a very long time for anything to happen and then she is prompted for our proxy server credentials. She has to wait a very long time again before she can do anything at all, like the machine is bogged down. Finally after several minutes, you can type in the credentials. Once that is done, the whole scenario has to be repeated and the user can never print the email? Can anyone help with this situation? I am not a Mac person, so please keep that in mind. I am new to this position here.