You experienced same issue like me? OK here's what you should do:
- First, open your GTalk account preference. Head to "Basic" tab and write "gmail.com" in "Domain" field. Make sure the protocol is XMPP.
- Switch to Advanced tab. Select "Force old (port 5223) SSL"
- Make sure the following fields are written this way:
- Connect port: 443
- Connect Server: talk.google.com
- File Transfer proxies: proxy.eu.jabber.org