I was using Intellij 8.1.3 for quite sometime on Windows XP computer, JDK 1.5.
I upgraded to IDEA 9 (MAIA 10875). But due to an issue with refreshing as I have in the following link:
I switch back to 8.1.3. But now my 8.1.3 is broken. The IDEA comes up fine, but the window does not repaint or refresh. It appears as if it is hanging.