Regarding comment #29, you are free to download and install the root certificates yourself as cited in comment #21. Note that central maintenance of work stations in LANs and WANs -- such as might be practiced at your institution -- might allow for a central installation of the ipsCA root certificates in the workstations there without requiring each user to do it individually. If you don't trust ipsCA sufficiently for you to install its certificates now, then why would you think the Mozilla organization has more trust in ipsCA?
Regarding comment #29, you are free to download and install the root certificates yourself as cited in comment #21. Note that central maintenance of work stations in LANs and WANs -- such as might be practiced at your institution -- might allow for a central installation of the ipsCA root certificates in the workstations there without requiring each user to do it individually. If you don't trust ipsCA sufficiently for you to install its certificates now, then why would you think the Mozilla organization has more trust in ipsCA?