Cubase 7 disk Cache Load

Hello there, since I upgrade Cubase 6 to 7, I’m having sometimes my Disk cache overload. Tho everything works fine. Just wanting to know if there is any manipulation that I have to do to avoid this?

My system is MAC OS X 10.8.4
Processor 2 x 2.4 GHz Quad Core Intel
Memory 16 GB 1066

Thanks in advance.
Screen Shot 2013-09-02 at 10.13.35 AM.png

Same here!

Same here too