I'd listed some bugs in the MFD in my last post, and had posted about Mac OS X Lion's flawed SMB implementation. P contributes one more:
Yesterday we were trying to take a print in Landscape from a Mac computer through Libre office app to the new HP printer. There was no option to change the orientation from Portrait to Landscape. Did a bit of google and found this workaround.
The solution is to use TextEdit to change the orientation, save it (like A4 Landscape) an then use it with other apps. While using the TextEdit to change the orientation, keep all other apps closed to enable it later to pick the new printer settings.