Could you provide an example? Is this about registration or other people's user names? A list of steps that I can follow and reproduce the problem would be perfect.
I tried to register the test username "Ψ-test" at jabber.org for example.
After typing in every information into the account wizard, I get the message, that the account was verified. But shortly after that I get an error message: "XMPP: Error during authentication."
Also the username Ψ-test is written as ¨-test in the account manager. It seems, that SamPlace can't handle unicode characters correctly.
Then I tried it with the Jabber-client Psi and get the error: "Resource constraint. The server or recipient lacks the system resources necessary to service the request." (and it doesn't care, which username I try to register).
But at another time it was no problem for Psi to register a username with an unicode character (and login) at jabber.org.
Could you provide an example? Is this about registration or other people's user names? A list of steps that I can follow and reproduce the problem would be perfect.