78 GB cache

I just installed 2.75 and I noticed a whopping 78 GB of data had piled up in my 2.74 cache. How did this happen and how can I prevent this in the future?

I’m thinking it may have something to do with the “cache BVH” setting but I could be wrong.

How big is the file “.blende” ?. Or how many polygons are you using ?. Then we jump to system “linux, windows, mac” which uses?
My personal recommendation, if possible install blender 2.75 rc2. Try to remove the cache generated “78 gb” if using Windows, use cleaner disk space windows.

After that restart your PC and try again but with blender 2.75.
Good luck.

Yup. Definitely sounds like BVH cache.