For the record, I decided to get an Epson 4900 and, so far so good. I don't print every day to it but it seems that the head's clogging problems in this machine are never as severe as they were on the 4000. I noticed, too, that, whenever I turn it on, it seems to go through some internal routine which, I suspect, includes some kind od head cleaning or nozzle check behind the scenes. Still, my first order of business using this printer, with the ORIS ColorTunerWeb RIP, is to launch a simple nozzle check. So far, so good. That nozzle check pattern is keeping strong and I have not come across my first clogged heads yet. I think I've had the printers for a couple of months now. Best / Roger -----Original Message----- From: colorsync-users-bounces+graxx=videotron.ca@lists.apple.com [mailto:colorsync-users-bounces+graxx=videotron.ca@lists.apple.com] On Behalf Of Robert Rock Sent: August-30-12 9:19 AM To: 'Matthew Ward'; 'colorsync-users Mailing List' Subject: RE: Weird printer profile update Matthew, Yes, this list is a great resource for problem solving, no matter the cause. Sometimes, as you now know, the solutions are unbelievably simple. Glad you're back up and running. Another problem which I'm sure many of us often encounter are clogged heads (nozzles), which also do wacky things to our output. Nearly every printer manufacturer recommends (at least with older models) to periodically clean the print heads, often done via their own built in utility. As you know, this is done by spraying ink through the nozzles to clear them, using and wasting LOTS of very expensive ink. I came across a very simple utility called "Harvey Head Cleaner" (http://www.harveyheadcleaner.com/) that does this automatically in the background while you sleep. It works by printing a very small test pattern which uses a minimal amount of each color. When done regularly, this will guarantee that your nozzles never clog. And again, it uses a very, very small amount of ink, compared to the manufacturers head cleaning utility. When not in use, I keep my printer loaded with inexpensive uncoated paper to be used for this recurring process. And the same paper can be turned over and used again and again. I have no affiliation with this company, nor do I own their stock, but am only recommending it for a solution to a very annoying but easily resolved problem. Best, Bob Rock