IDEA won't shut down properly

Hi. 

I  recently installed IDEA on a pretty fresh Arch Linux system. It seems to be working fine except that whenever I try to exit IDEA, it offers me a confirmation dialog, I click OK, and the application freezes. I can't even kill the process.

I don't know if it matters, but it's in /opt, chown root:root, and chmod 755. I'm running it with a normal user account.