[Google] unable to use hangouts or talk

[pravi]

it just gets stuck at synchronizing. I do have a huge addressbook with more than 1000 contacts. I tried both hangouts and xmpp/jabber options. It connects but it does not go ahead with synchronizing. After sometime I don't see any data activity. My connection is a bit flaky, but there is no timeouts as well.

zte open c, firefox 1.3, loqui 0.3.3