After downloading CCleaner, I found that my DEP keeps shutting my Windows Explorer down,but starts up again straight away, after I click on my Desk Top Icons, its not much of a problem really, as it does not prevent any programs working, just asks me to notify microsoft. I am using Windows XP sp2, any help would be appreciated,
You could try going into the event viewer (control panel, administrative tools, event viewer) and see if anything is flagged up as an error.
Also have a read here,
http://ask-leo.com/how_do_i_turn_off_data_...ion_errors.html
I am not suggesting you turn DEP off but there is a way to make a program an exception if you read all the page.
You could also try uninstalling CCleaner and installing the slim build from here.