Just received a ransom notes from Parallel that Maverick won't work with Parallel 7. Never again . "URGENT SERVICE NOTIFICATION FOR PARALLELS DESKTOP 7 FOR MAC USERS: If you intend to upgrade to the upcoming Mac OS X Mavericks (10.9), please note that Parallels Desktop 7 for Mac will not support OS X Mavericks (10.9). You will not be able to launch your Windows virtual machine or directly use your files through Parallels Desktop 7. Before you install OS X Mavericks; upgrade to Parallels Desktop 9 for Mac, as it is the only version available today ready for Mavericks. Upgrade to Parallels Desktop 9 for Mac"