When same version and still slow …
Solution 1: Print the file using a PostScript printer driver
Solution 2: Print using Print as Image option in Advanced Print setup.
Solution 3: Change the Print Optimizations setting to “Disabled
Acrobat uses different printing routines based on the type of printer driver your system uses. When you use the PCL printer driver, the spool file sent to the printer is larger than it should be. When you print using the PostScript printer, you will not encounter this problem.
(Updated 07/06/2012: One of the main reasons for this performance issue can be due to printers with very little on board memory, selecting printers with larger on board memory can make a dramatic difference in your printing performance).