If you have this error when starting up intellij 13 ultimate EAP on linux 64 bits:
[YourKit Java Profiler 12.0.3] Log file: /home/casa/.yjp/log/IntelliJIdea13-2942.log
/usr/lib/jvm/java-7-oracle/bin/java: symbol lookup error: /home/casa/.java/jayatana/1.2.0/amd64/libjayatana.so: undefined symbol: gdk_threads_enter
Add this line to idea64.vmoptions
-Dlinux.native.menu=false
It worked flawlessly for me and I can keep coding.