CompatibilityReally the best thing you can do is keep checking back to lexmarks website.
There are Vista drivers for the lexmark 5400 series on this page:
http://support.lexmark.com/cgi-perl/select...amp;req=:::-1::From what I can tell there isn't one actually called the lexmark 5400, just ones like lexmark 54xx where x is another number.
Tell us if the page above helps, if not, what is the model number written on your printer? (might be on a label on the back.
Slow CopyingThe slow copying might be caused by the print quality being set to photo quality, try turning the print quality down and hopefully copying time should speed up (at the compromise of quality of course).