agent 8131's fix worked for me, except that I could not copy the two .pem files into the ca-certs folder named there (as I am not sure of the commands needed to copy them in as root.) So I ended up just putting the omega.contacts.msn.com file into the ~/.purple/certificates/x509/tls_peers folder, replacing the old one, and enabled msn messenger in pidgin again ... that is working for now. Knock wood.
agent 8131's fix worked for me, except that I could not copy the two .pem files into the ca-certs folder named there (as I am not sure of the commands needed to copy them in as root.) So I ended up just putting the omega.contacts. msn.com file into the ~/.purple/ certificates/ x509/tls_ peers folder, replacing the old one, and enabled msn messenger in pidgin again ... that is working for now. Knock wood.