Canon has thus far been less than helpful. Any ideas or anyone with experience troubleshooting this issue would be greatly appreciated. Thanks in advance. My MP530 has worked just fine for a few years, connected directly to my iMac via USB. Recently, I went to print a document and it would not print. There is nothing different about the set up and the display on the printer did not indicate any error message. However, when I pulled up the print status on my computer, it indicated that the printer was "offline". All drivers should be current and no software update had recently been installed that would have broken a driver. I tried a number of different things to get it back online including pulling wires out and back in, changing USB ports on the computer and turning off and on again both the printer and my computer. Nothing worked. So, I tried using the online troubleshooting on the Canon site. It suggested that I delete the printer from the "Printer & Fax" section of System Preferences and then try to "add" the printer back. Unfortunately, after deleting the printer from System Preferences, I plugged the printer back into the iMac - using two different USB cables - and the computer did not recognize or acknowledge the printer (which was on) as being connected. Kindly help as this situation has suddenly left me and my home office with no way to print out anything. Thank you.