When trying to eject an external backup drive, my Air would not eject the drive. AND, after attempting to eject, the entire system would begin to freeze up. I use the latest Mac OS and version of Avast.
I worked with a senior Apple support person for weeks trying to figure out what was causing this behavior, to no avail. We wiped the SSD drive and did a clean install. We used safe boot. You name it, we tried it.
On a hunch, thinking about how Avast scans an external drive, I uninstalled Avast. And behold! The issue disappeared.
Has anyone else had this issue? Were you able to resolve it? I've just quit using Avast completely at this point.
I thought I'd submit a bug report to Avast, thinking they would want to know, but there seems to be no way to do so - or at least they hide it so well I can't find it.