For good or for bad, I upgraded my Early 2009 MacPro to Mavericks which has NVidia's Quadro K5000 video card installed. Actually, it seems that I am not experiencing any issues so far. I do both audio and video editing (as a serious hobbyist) and everything seems to be working fine. This includes working with programs like Final Cut Pro X and Logic Pro 9.18. However, I am anxious to install the driver provided by Nvidia as I always do when I update the operating system. I can't find any mention on the Nvidio web-site to any progress they may (or may not) be making to creating a driver for Apple's Mavericks. They usually seem to be quite good in keeping up to date with their drivers, at least for the Quadro K5000 video card. I'm also not able to find too much information on the internet as to whether or not other people are experiening significant issues between their Mac Pro with the K5000 video card and the Mavericks operating system. Does anyone here have any news to the progress Nvidia may be making to creating a new driver for the K5000 video card to work with Mavericks? Are they even going to create a new driver? (It's a relatively new card so I would hope and think that Nvidia will be supporting it at least for a while.) What issues might others be experiencing between their K5000 card and Mavericks?