Cool. Per my observation, IntelliJ IDEA has been getting slower and slower, more and more buggy, as the time passed. Now it got freezed during development process (a simple Hibernate maven project) and when I killed the process (IntelliJ IDEA) and attempted to start a it over, I got this:

..and now it's showing up again and again.. as many times, as I unsuccessfully try to run the IDE. This does not help.
What has been done with this IDE, seriously?
Please, note, that I'm well aware, that uploading pictures are not the best thing we can do here, but sometimes there is no better way do demonstrate the problem.