Audio and position keyframe problems/glitch?

I'm having a weird issue when I add audio level keyframes and/or video position keyframes. The first time I add a new keyframe to any audio track it puts the keyframe in a random spot rather than where my playhead is. Same with positioning keyframes making animation nearly impossible. After the first one it then properly puts the keyframe where the playhead is. It's very odd and very annoying.

I've trashed prefs and restarted with no fix. Any other ideas?

How are you adding the keyframe? Option-click? In the Inspector? Is the skimmer active? What's the zoom level? Asking all this because I can't repeat the behavior you're seeing.

In the inspector. Skimmer is not active. Any zoom level.
I don't have this problem when using my laptop. This is only on my iMac.

OK so I trashed my prefs for a second time and restarted the box. That seemed to fix the problem. Very strange that I would need to trash them twice.

thanks for the response.