I'm running Ubuntu 14.10, but I originally installed 14.04. When I was using 14.04, I had no trouble deleting files. Ever since I upgraded (several weeks ago) from 14.04 to 14.10, I find that the "Files" application freezes for about 30 seconds most of the time when I delete a video file. (I've tried .mkv, .avi, mp4). I would say that 90% of the time, the Files program freezes up; after a few seconds it fades to grey, and then after about 30 seconds, it returns to life. Only the "Files" application is frozen during this time. I can switch tasks and run other things without any trouble.
I have tried deleting these types of files from the command-line without any delay. And I've tried it with the trash empty, and with the trash full of lots of files. That didn't seem to make any difference.
Is anyone else experiencing this in 14.10? Is this some artefact of the upgrade? How can I avoid this delay?