Large Data Files in /mnt/sdcard/Android/data/com.cooliris.media/cache

Recently, I found that my sdcard become full suddenly. 
I remeber that I must have more than 1G left.  So I am looking for which directory are growing too quick. 

Finaly, I found that it is coming from /mnt/sdcard/Android/data/com.cooliris.media/cache. 

This directory contain more than 1G files.  So I delete them to free up the memory.

However, it is growing up quick to use up all the memory in my SDCARD.

At last I found our the reason.  It is coming from cache for my comic.  So I added .nomedia in all of my comic and the problem solved.  It is now only around 50M.