There are several answers in the Forums for different IntelliJ Versions, here is what I´ve tried (IntelliJ 13).
- Give more Memory. Does not help anything with the ‘Updating indices’
- Delete .idea and iml in project. Does not help.
In the end what resolved my problem with ‘Updating indices’ was:
- delete ‘caches’ folder in user/.IntellIJIdea13/system/