Dylan,
Thanks for the tip. However, I'm not so sure about that "server certificate that was given to you" bit. Would that be a cert that was downloaded and placed elsewhere? Here are the certs that are now in the cacerts folder:
BTCTRoot.crt
Class3PCA_G2_v2.crt
Class4PCA_G2_v2.crt...
I'm having the same problem (Firefox1.5b, OSX 10.4.3, Citrix OSX client 7/05 date download)... Error number 183... certificate not trusted...
How do I let Firefox know to accept the certificate? Is it some other thing?
Ideas? [newb here, but I couldn't Search as it is down]