Pidgin Cannot Connect To Google Talk Or Yahoo Messenger

[Tom]

 Hello:   I am using ubuntu 12.04.3  and I set up pidgin and installed google talk and yahoo messenger talk, but neither one can connect
 It just keeps saying that "it timed out"
Is there a fix for this and is there another IM talk I can install to talk to
my Googel and Yahoo friends? Thank You Very Much, Tom
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