Question : Problem: How do I know if a certificate is bad for an sccm client

I currently have roughly 30 computers that show they do not have the client installed and are not assigned, etc.  However when I check these machines it appears the sccm client is in fact installed and they have received a few of my pushes.  My question is, (after hearing so much about bad certificates) how does one troubleshoot to determine if there is in fact a bad cert or a duplicate.  We use ghost to image our workstations currently so it is possible that we created an image that was not sccm neutral when we began using sccm.  We had zenworks in the past and are no longer using it at all.

Answer : Problem: How do I know if a certificate is bad for an sccm client

Working on a fix is sometimes the easiest way to troubleshoot, instead of time consuming research and confusion due to anomalies:
http://www.experts-exchange.com/Microsoft/Applications/Q_24019229.html?sfQueryTermInfo=1+paranormast+sccm