Hmm, I have just done a successful test-print from my second desktop pc which is connected by wireless to my main desktop, in another room - using BT Homehub2.0, main desktop connected to router via cable.
Status monitor shows as normal on both PC's.
Are you sure that you have set-up printer sharing fully?
On the print server machine (the machine with the printer directly connected), open the printer control panel for the Epson printer (Start --> Settings --> Printers & Faxes --> Epson 1280). Select Properties under the Printer menu. From the Properties window, General tab, click on the Printing Preferences button. Select the Utilities tab and click on the Speed & Progress button at the bottom. From the Speed & Progress window click on the Monitoring Preferences button. From the Monitoring Preferences window click the checkbox marked "Allow monitoring of shared printers". Click OK button on all the windows. Now when the status monitor runs on other machines they will be able to monitor the shared printer.
In the past I have used my main PC has a print server,and enabled sharing-share this printer.And the status monitor has worked.
When I set-up wireless printing via the Linksys server,I had not enabled the printer to share.I did not think it was required.But I followed you advice and enabled the share,and the status monitor is still off line.
In regards to sharing,I only have simple file and printing enabled.