Honestly, I tried that repeatedly, but the ghosting issue just refused to stop until I tried the command prompt method.
Sorry if I'm being a bit confusing here, but I just discovered something:
CCleaner still fails to clear the browsing history under a standard (non-admin) account, and I have no idea why. It fails for both IE8 and Firefox.
Believe me, I've tried running CCleaner with EVERYTHING in both the windows and applications tabs checked, and running it with admin privileges under the standard account. Even after a reboot, the browsing history is still there. More of a minor annoyance than an issue but I'd at least like to know why it's happening.
I hope the developers are watching threads like this.