Do you have experienced that other sites that your own is showing in Site Diagnostics in the Adsense panel ? And why do other sites appear there ?
Someone could've copy & pasted your HTML and accidentally forgot to remove your AdSense code / publisher-id. Is that what you mean?
yes that happens regularly a few URLs each time I verify - around half a dozen pages usually AOL search results showing pages of my site appear as blocked pages for adsense bots in adsense site stats.