Printer not connected message

When I go to system preferences, then network, the firewire and the ethernet choices are red--as in not connected or not working.

If there is nothing connected to FireWire or Ethernet this is normal. Is your AirPort network status green in System Preferences > Network?

This is a common complaint after upgrading from Snow Leopard systems.

Try this - reset your printing system as described here:

http://support.apple.com/kb/HT1341

1. Choose System Preferences from the Apple menu.
2. Choose Print & Scan from the View menu.
3. Hold down the Option key while clicking the "-" (Remove printer) button. If no printers are currently added, hold down the Control key while clicking in the box that appears above the "+" (Add printer) button, then choose Reset printing system… from the contextual menu.

Then, add the Canon Pixma again using the "+" button.

What does Reset Printing System do?

• Deletes all queues and jobs.
• Resets all printer settings to their default by deleting configuration files.
• Performs a permissions check on the /tmp directory.

Any printers, scanners, or fax modems that previously appeared in System Preferences will need to be added again after resetting the printing system.

That should fix it.

That's normal.