'Last opened date' seems inaccurate

[shinji]

Whenever I'm searching for a file and I use 'last opened date' as one of the options, it presents files that I know I didn't open within that timeframe (and I'm the only user here) as well as not including files I know I opened.

Any ideas? I don't know if something indexing my files is causing this, I do use Launchbar, but I can't imagine that's it?

 

[Bahamut Eos]

I'm having the same problem. Does anyone else know what is causing this?

The created date and the last opened date of some files are the same.

Does anyone know how to check if a file has been opened recently, other than the finder. Perhaps something in terminal?

Thanks!