Hi
Regarding your queries
Whenever I log on (either using your Web client or on my N85), I get several messages from each of aim.mobjab.com, icq.mobjab.com, and msn.mobjab.com along the lines of:
Incorrect login details or multiple logins would give that error.
Web client to remove them by choosing "Manage services" in the menu and then selecting "Remove" option and also would need your External IM password to remove the accounts. Have removed all the external IM details from your account. Register via the web client your Yahoo external IM only which you require.
While I'm at it, I also do not see the presence status of my contacts on my N85 - they all appear to be offline (they show up correctly on the Web client though).
In your IMPS client on Nokia there would be a setting for showing offline/online/all contacts. check that out
Other users had an issue with Yahoo External IM on Nokia n-95 and E series handsets. Would be curious to know if it works fine on your handset or not?
Team@Mobjab