Spent all day yesterday and this morning installing and uninstalling the lexmark 5470 drivers. The funny thing is I had to take my machine in for unrelated repair this morning and while I was waiting, a customer next to me had brought his machine AND lexmark printer and had the Apple tech guy take a look. Sure enough, the tech guy got the printer to work by changing the name of the PDE driver folder located in Library/printer/driver/pde. No need to delete the plugins, but they are apparently old which are causing leopard problems. The printer was not an x5470, but it was a Lexmark All-in-one. Don't recall the model number. Oh, the lexmark support person I talked with in the a.m. said the new driver would be up 1/8. Anyways, a haven't had a chance to try renaming the folder yet because my machine is still in repair. If anybody else has tried this, i'd be curious if it works.