I kindof agree with BUU here. From a security perspective there is a constant out pouring of exploits and potential hacks but the reality is that a lot of them are effectivly useless unless you are sitting down at the box, i.e. instead of running the exploit you could easily go "format c: /q". Don't get me wrong, I'm constantly looking at the exploits and the security workarounds & patches as we look after some financials, but I still think there is a lot of FUD out there(Fear, Uncertainty, Doubt).
I would think that while the author of Safe considers it unsafe (sounds weird really:-) it may be better then not using it at all.
Saying that I've never used it in production code, but then again I have never needed to with the programs I write.
just my 2 cents.