Last week I did something to my certificate Authority — the certs that were issued after a certain point did not work with Mac OS or Windows 7, although they did work with Windows XP and Vista. I compared files and straced certificate requests and signing, and I could not find the difference between the messed up version and the last (July) backup of the CA. In the end, I moved the new certs to the backup, reissued the funny ones from the backup, and ever since it has worked with all OSes, once again. Want to fix practically anything? MAKE BACKUPS! — MD