I am using IntelliJ IDEA Ultimate 10.5.2 on Fedora 15, 64 bit with OpenJDK 1.6.0_22. This usually happens when I have two projects open. I attempt to perform some action, perhaps renaming a class. The refactor dialog comes up, you click a button, but then the same dialog comes back with all the dialog buttons vertically flattened with no text in them. They appear to get focus, can change focus, but they cannot be clicked. You cannot press escape. You cannot switch to the other project. Then menus and all buttons are non-responsive as if a modal dialog has still grabbed focus. It is not crashing, but you have to kill Intellij and restart it. And this happens frequently and repeatedly with multiple different kinds of modal dialog boxes. My machine has 8GB memory, an AMD Phenom II 3Ghz, lots of disk space. I did not see that anyone else has reported this bug. Is it a case of running out of memory? The memory guage in the status bar is indicating that it still has 1 GB of memory free (2GB configured). What can I do about this? Thank you.