I'm having a similar issue of sorts. I purchased the Canon Pixma MP240 and installed it on my system Win 7 64 bit using the included
drivers disk. I used it several times for approx. 100 printed pages and about 20-30 10 card sheets of business cards successfully. After the 3rd day I tried to use it again and it's no telling me that the printer is offline on the direct print screen (popup) but if I check in the navigator area of the Canon software it tells me that the printer is online? I've installed the
drivers off the disk again, removed the USB cable, started the computer several times and nada. I even downloaded the Vista 64 bit
drivers and it's continuing to read out the same thing. Directly it's offline, in the software it's online?