I have noticed the same issue with a new cert we have installed for our guest
wireless implementation of ISE. The "invalid certificate issuer" error is
only seen from clients running 10.7.x Lion that are using Safari. We do not
see this issue on ipads, iphones, windows machines, or other OS X versions
even including the latest developers seed of 10.8 Mountain Lion.
Thank you,
Kelly Slone, B.S., MCP
Telecom Specialist II
Marshall University Computing Services
Drinko Library DL 434A
Office: 304-696-6109
Helpdesk: 304-696-3200
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