Digital BW, The Print

Hello all;

I seem to have a bit of weirdness going on: occasionally my 1280 
decides about 1/4 of the way down a print that all image data is 
straight lines, and procceeds to print everything in vertical lines 
down the rest of the image, with the tone of each line coresponding 
to the tone it was printing when it decided to flip out. The effect 
is quite Dali-esque, it looks like the image just ran sown the page, 
but in a very organized fashion. Turning off the printer gets me a 
few good prints, until it happens again. Only happens on vertical 
prints 4x6-ish and up in size. Any ideas?

 Also, a Photoshop glitch: when I try to save a TIFF I get a message 
that "Cannot save *******.tif because the file is in use or was left 
open"  Come again? why else would you want to save a file anyway? 
Has anybody else haad the problem? I thought it was only PS 7 but 
this morning PS 6 did it too. Help!

Thanks for any ideas;

Steve Karafyllakis