I bought the Canon MX850 multifunction inkjet printer with my recent iMac purchase. Canon's support site has an updated driver available however it is a CUPS driver. I am not sure what that is or if I need it. The printer is connected to my wireless router's ethernet port (after I connected it to the USB port on my iMac to initially configure the printer's network settings). I first installed the drivers and software from the included CD. The driver version on the CD is 7.1. The updated CUPS driver from the website is 10.2. I did download that and installed it however the driver version stayed the same, 7.1, rather than updating to 10.2. However, if I connect the printer directly to my iMac via USB, the driver version then changes to 10.2. So, when connected to the network the driver version is 7.1 but when connected to iMac it is 10.2. What the heck is a CUPS driver? Do I need it? Should I just use the drivers from the CD? Thanks!