One source that has previously recommended SARDU now recommends testing it with Virustotal.com before using it. I did so, and some of the scanners there report "adware" (Avast), "Trojan" (TrendMicro-Housecall, VBA-32), or some other "exploit" (eSafe, Jiangmin).
I'm now reluctant to use SARDU until this is cleared up.