Using CS5 to process and print photos at a live event I noticed that even though you can specify a number of prints in the print dialog it only ever prints one copy. I tried this several times using both an action that printed and opening a file from Bridge and printing. When I finally gave up and opened a file and just hit Ctrl-P twice to print two copies (leaving the print number at 3 since it was ignoring it anyway) I got six copies! Not only broken but unpredictable. At least CS5 doesn't crash when printing from an action or print negatives like CS4 did but this bug is going to be seriously painful as customers requesting multiple copies of a print occurs about 50% of the time at my events and as I run a complete processing macro, making additional copies means re-opening the file from bridge and printing. Sometimes group shots require 12 or more copies!
As mentioned in the other topics about this same issue: this is a problem with the Windows interface between the new Vista/Win7 printing APIs, and older drivers designed for the older printing APIs.
We are investigating the problem, but don't have an ETA on a fix because we need to work with Microsoft to figure out the whole problem.