I had an ongoing issue where the active Aperture 3 window (mostly, but sometimes even other app's active windows) would suddenly no longer be the active, highlighted window. This was particularly aggrevating when culling through images, selecting several of them, and then pressing the - or + keys to change the image rating. I'd have images selected and then press the key only to hear the system alert sound and find the Aperture window that I was working in was, somehow, no longer active. I then had to click on the library window again to make it the active window. This was happening all the time and the active library window was somehow becoming no longer the active window at various time intervals of a couple seconds up to maybe 20-30 seconds, usually within 5-10 seconds.
After much searching and finding nothing at all on this issue, I dove in and started troubleshooting startup items, login items, 3rd party preference panes, and finally think I've found the conflict. I found that Library/LaunchAgents/com.onlinebackup.daemon.plist is the offending file. When it is installed, I experience the issue. When I remove it from Library/LaunchAgents, the issue no longer exists. I can't find any info on what this file does or what app, etc. installed it. Does anyone know what it is/does? Is it part of OS X (currently running 10.8) or is it the result of an app install?
After much searching and finding nothing at all on this issue, I dove in and started troubleshooting startup items, login items, 3rd party preference panes, and finally think I've found the conflict. I found that Library/LaunchAgents/com.onlinebackup.daemon.plist is the offending file. When it is installed, I experience the issue. When I remove it from Library/LaunchAgents, the issue no longer exists. I can't find any info on what this file does or what app, etc. installed it. Does anyone know what it is/does? Is it part of OS X (currently running 10.8) or is it the result of an app install?