Quote Originally Posted by alecz20 View Post
I ran into the same issue a few times lately.

I had over 160 GB of free space, so I don't think that was an issue.
However, I was attempting to move about 50,000 text files from an external disk to a folder on the internal disk.

When trying to do this... nautilus became sluggish, and I was unable to open any more folders.

However, other programs ran fine (4 core CPU).

Your solution seemed to fix the problem at least temporarily.
Indeed, file space seems NOT to be the issue, I had > 380 Gigs free, but was attempting to move 90,000+ files.

Nice fix, worked like a charm.