In the last week I have 2 servers, both Windows 2003, fully patched, that serve, among other things, as print servers in their location. The problem is that certain users in those locations loose their connection to the network printers. At their XP desktop (fully patched) the printes will work part of the day, then show 'Opening' for a few minutes then 'Unavailable'. This happens to all their mapped printers but not any local printer. When I connect to the server the printers show they are available and I do test pages from the server without any problem. Then, for no appearant reason all the network printers become available at the desktop again. I can find no errors in Event log for the server or a the desktops that seem relevant to the issue. Any ideas?