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I am getting this error after upgrading to Firefox 3.5.

discover.foxmarks.com:443 uses an invalid security certificate. This certificate is only valid for *.xmarks.com (Error c......

I have tried the following, all with no luck:
1. Change encryption to "none"
2. Reinstall xmarks--I cannot reinstall as I get the same error message and Firefox blocks the install.

Note: xmarks for IE is working fine on the same computer.

What can I do?

Thanks