Nah... Unless you spill the toner (which is a very fine plastic particles mixed with pigments) it's practically harmless. Airborne toner (and I mean a huge cloud) would be a serious issue as every other fine dust (particulate matter like PM10 and lower) would be. To learn more I suggest you check: http://en.wikipedia.org/wiki/PM10 Some time ago there was a study about potential Health & Safety risk associated with laser printers (photocopiers) as they emit some amount of ozone while working - but still it isn't an issue in a even average-ventilated office. If you have a dozen of those machines sitting in a tiny room with a window that never opens - that would be some area of concern - but still I wouldn't be panicking. Regards

Epson is the only manufacturer that uses piezoelectric printheads in their inkjets. These in theory (when used properly with good quality ink) could last for a life time. That's why the printhead is not replacable (well... at least notuser-replaceable...). HP, Canon etc. use bubble-jet technology in their inkjets which relies on heating the ink so it's being pushed onto the paper. This technology is much more prone to failure (heated/cooled ink clogs the jets, micro heaters in the priniting head just burn and die). That's why those printheads are replaceable - they are also a consumable. Epson's solution is in theory superior.

You're misinformed. IBM is already jumping. You can have a Linux workstation (Open Client for Linux - for Red Hat/Fedora, Ubuntu, SLED) in IBM. What's more the default office suite in IBM is Lotus Symphony now. MS Office is slowly going away. BTW: I've never seen Windows Vista installed on any work PC in IBM.