After switching to ATT UVerse, which uses a 3Wire integrated Cable modem and wired/wireless router, I can't print to my 2600N via the network. Is is configured with a static IP address (192.168.1.100) and has no address conflicts with other devices. The installation utility will see the printer at that address and install without error. However, no print jobs go through to the printer. Print jobs will appear in the print queue with a status of spooling that drop out as if they printed, but no output is generated at the printer, nor are there any error indicators on the printer (it is just on line and ready). I've tried disabling all firewall software on client PCs (three different ones running Vista) but all have the same problem.
USB printing to the one printer that is close enough to do so works and I brought in a Windows 7 PC to diagnose the problem and that worked.