I can see the ink levels on my IP5200R and I could using Tiger using the old Airport and now the new one with Leopard (and Tiger). In the Print & Fax panel, clicking 'Options & Supplies' gives an option for Supply Level. This doesn't work! However, if you double click on the Printer image in the left panel, the print queue can be seen. Click on Utility, choose Network in the drop down box and then highlight the Canon. Then click Maintenance which gives cleaning options, ink levels etc. Interestingly, and this doesn't seem to have anything to do with either Tiger or Leopard, I'm getting strange error messages saying I can have only one black ink tank. I have to click out the tanks and put them back before I can print! Additionally, the software has decided that my yellow tank is not manufacturer's ink (it is) and so refuses to give me the level on that tank. But, I don't really care!!