Preferences → Under the Hood → Clear Browsing Data → Select the time frame and check only “Delete cookies and other site and plug-in data” → Clear Browsing Data
Tools → Clear Recent History → Select time frame from the dropdown menu(if you wish all cookies removed - select Everything) → Mark Cookies only → Clear Now
Settings → Configure Konqueror → Cookies → Management → Delete all
Tools → Internet Options → General → Delete Cookies (under the Temporary Internet Files section)
Tools → Delete Private Data → Details → Mark Cookies only → Delete
Safari → Preferences → Security → Security tab → Show Cookies → Remove All