I'm running a windows server 2008 r2 with apache 2 installed runnign svn. I've had to buy a new public cert. I've overwritten the old .crt and .key file with the new files and then restarted the Apache service. It all restarts fine with no errors, but when I browse to the site I still get a certificate error and it's still trying to reference the old certificate. The old files have definitely been replaced.
I did this same process for another server I have and it worked. I have inherited a server from someone now out of contact, so I'm not really sure on where to go from here.