Has anyone seen this message from a trillian user

[Serge Banderet]

The person using trillian got this message when I IM'ed him...

*** NOTE:  This user appears to be using an older Mirabilis ICQ client,
which depends on an outdated version of the ICQ protocol.  As such, you
*may* experience intermittent message loss.  Encourage them to upgrade
to Trillian or a newer build of ICQ! (You can e-mail them, or call
them... :))  You may turn off this warning in ICQ Account Preferences ->
Misc.

Thank You, 
Serge Banderet