Comment 12 for bug 257190

When it come to Google Talk, telepathy-gabble seems to be the problem.

At Gnome's bugzilla the bug is marked "Status: RESOLVED" and "Resolution: NOTGNOME" for Empathy.

Comment #5 @ http://bugzilla.gnome.org/show_bug.cgi?id=579650

"Will Thompson 2009-08-14 14:43:21 UTC

XMPP has many, many different ways to become invisible. The subset that
telepathy-gabble supports does not include the one used by Google Talk. So
MC/Empathy/something falls back to busy."