Debug files filling up my Cache on Zen 139H

Hi
I am getting these kinds of debug files bulking my cache:[13-Apr-2011 07:23:40] PHP Warning: include(includes/modules/FILENAME_XSELL_PR$
[13-Apr-2011 07:23:40] PHP Warning: include() [<a href='function.include'>func$

The files names are like this:
DEBUG-1302701882-956340.log 642 Bytes text/x-log 0644
myDEBUG-1302701885-382188.log
Can someone give me some direction to stop it got a complaint from my server
Zen 1.3.9H, fresh install, has image handler, paypal, google sitemap, news and articles. I just deleted 50,000 files
Thanks

Best way to stop it is to deal with the problems they're reporting.

The one that you've included suggests that you have a partial implementation of a cross sell mod, but that parts of it are missing. It needs to be either reinstalled in its entirety or removed completely.

Thanks got it!