wild background Subversion process

I have an svn checkout on my disk with around 80000 artifacts(change management repository) which causes the latest EAP to go bonkers. If I reference the whole repository in IDEA then 50-100% of one of my cores is consumed with some svn activity that never seems to end.

My current work-around is to reference on a small part of the checkout that I use in a given project.

Is this a known issue? Is there some setting I can change?

--Florian