Some extra information:
- I have no USB device connected (except my Monitor)
- I have not modified anything else except upgrading the OS.
All I have in my logs everytime I try to put my computer to sleep is the following:
26.07.12 07:32:54,446 WindowServer[167]: CGXSetWindowBackgroundBlurRadius: Invalid window 0xffffffff
26.07.12 07:32:54,447 loginwindow[52]: find_shared_window: WID -1
26.07.12 07:32:54,447 loginwindow[52]: CGSGetWindowTags: Invalid window 0xffffffff
26.07.12 07:32:54,447 loginwindow[52]: find_shared_window: WID -1
26.07.12 07:32:54,447 loginwindow[52]: CGSSetWindowTags: Invalid window 0xffffffff
26.07.12 07:32:54,585 WindowServer[167]: Created shield window 0x5b9 for display 0x2b28508e
26.07.12 07:32:54,599 WindowServer[167]: device_generate_desktop_screenshot: authw 0x7ff33b365080(2000), shield 0x7ff33b39f000(2001)
26.07.12 07:32:54,608 WindowServer[167]: device_generate_lock_screen_screenshot: authw 0x7ff33b365080(2000), shield 0x7ff33b39f000(2001)
26.07.12 07:33:14,092 loginwindow[52]: ERROR | -[LWScreenLock(Private) screenIsLockedTimeExpired:] | No lock state found, use built in check
26.07.12 07:33:14,098 WindowServer[167]: handle_will_sleep_auth_and_shield_windows: no lock state data
26.07.12 07:33:19,865 com.apple.backupd-helper[43364]: Not starting Time Machine backup after wake - less than 60 minutes since last backup completed.