Is anyone else have issues keeping his/her Mac asleep with a connected USB hub in 10.9 GM? 10.9 is cleanly installed (wiped the disk before installation), although I did transfer over system and user settings. With a USB 3.0 hub connected to my Retina MBP, when I put the MBP to sleep (either from the Finder menu, by Control-Eject, or by pmset sleepnow), within 30 seconds it wakes, goes back to sleep, and wakes again. This process repeats every minute or so. The system.log is filled with "kernel: Wake reason: XHC1." If I try to let the MBP sleep on its own according to the Energy Saver settings, it will not sleep. Only the displays sleep. (A Cinema Display is connected.) Even with just the hub connected (no devices plugged into it), the MBP repeatedly wakes. Disconnecting the hub lets the MBP sleep without issue. I have done a PRAM and SMC reset, reset Power Management settings, trashed com.apple.PowerManagement.plist, and tried various hibernatemode settings to no avail. I reinstalled 10.8.5 to a separate partition on the same disk, and sleep functions normally.