There is something wrong with a "fileChanged" signal at QFileSystemWatcher. I'm working on the text editor. The opened file is added to the monitoring files list using the QFileSystemWatcher::addPath. When the other program changes this file, I get TWO "fileChanged" signals instead of a one. What's wrong? I've tested it, edited the monitoring file in different editors, but the result is the same - two signals are emmited after the changes was done.