Delete Search Terms in IE7

Recently I have noticed that when I enter search terms used on different websites using IE7, or using Google Toolbar; I close IE7 and then run CCleaner. CCleaner no longer deletes the search terms from the search boxes in IE7 even though I have selected to delete all history and temp files. Previous versions of CCleaner always deleted these entries. How can I get CCleaner to delete these search entries along with history, etc.?

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I see you have RoboForm. That would be the first thing I would check. Otherwise could be the option in IE to remember form data (Tools, Internet Options, Content, Auto Complete). I visted that site and did a couple searches. No matter what I tried, I couldnt get a drop down list of previous searches.