Thanks for the additional info.

I've got these two certificates in my keychain:

1. com.apple.systemdefault - "This root certificate is not trusted"

2. Dashboard Advisory - "This certificate was signed by an unknown authority" (It appears to be Apple Computer, Inc.)"

Any idea what they are, what they mean, from whence they came, or, more important, whether they put me at risk in any way?

Thanks.

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire