My problem seems to be fairly common but I can't find the answer.
Pop.tpg.com.au:995 uses an invalid security certificate. The certificate is only valid for mail.tpg.com.au (Error code 22l_bad_cert_domain) This could be a problem with the servers configuration or it could be someone trying to impersonate the server. If you have connected successfully in the past the error may be temporary and you can try again later. The message appears at start up and at regular intervals. I have to keep cancelling before I can do anything else and it seems to slow my connection to gmail down. Most annoying is the fact that I am not trying to log into mail.tpg.com.au. Very frustrating!