All RUN history deleted

Friends: I am running Windows XP Pro and everytime I run CCleaner all my history in RUN commands are deleted. Please tell me what I should leave unchecked to retain this history. Thank you.

Untick Run-entry under Windows Explorer:

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Nodles: Thanks for your reply. It is already unchecked, yet all my history is gone.

Might "MS Search" -entry under "Applications/Windows" affect it? (Nope, not for me anyways)

Do you use Winapp2.ini-file?

Weird, my Run-history remains even I've ticket everything in CCleaner with Winapp2.ini (except for few Firefox entries).

Though you're running XP and I'm Win7 64bit, so can't really test it properly.