kde 4.2, kopete 0.70 and google talk

user@pc:~$ dig +short SRV _xmpp-client._tcp.gmail.com

20 0 5222 talk3.l.google.com.
20 0 5222 talk4.l.google.com.
5 0 5222 talk.l.google.com.
20 0 5222 talk1.l.google.com.
20 0 5222 talk2.l.google.com.

everything seems to be ok.  start kopete – add account – Jabber

basic setup -> jabber id: user@googlemail.com
Connection -> check “Use protocol encryption (SSL)” , “Allow plain-text password authentication“, “Override default server information: talk2.l.google.com Port:5223

google-talk1google-talk2

Get maximum from your network card

edit and copy-paste at the end of the file /etc/sysctl.conf

net.ipv4.tcp_no_metrics_save=1
net.core.rmem_default=65536
net.core.wmem_default=65536
net.core.rmem_max=52428800
net.core.wmem_max=52428800
net.ipv4.tcp_rmem = 8192 750000 52428800
net.ipv4.tcp_wmem = 8192 750000 52428800
net.ipv4.tcp_reordering=20
net.ipv4.tcp_timestamps=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_sack=0
net.ipv4.tcp_moderate_rcvbuf=1
net.ipv4.tcp_congestion_control = cubic
net.ipv4.tcp_adv_win_scale=9

save file, exit and reboot your machine 🙂

p.s. tnx to Popaj