We have reported a similiar issue to TAC.interestingly enoguh, when in email in Outlook 2010 and using the preview pane. Hovering over a person who is outside the organization, shows no contact info. Clicking off the email and going back to it and h...
I will add an "us too" to the list. We have had a few users that have spaces in their name. Worked fine in CUPC and not working in Jabber.Same symptoms as OP.
Sorry about that, was misreading (mis-answering I might say ) your question. That is definately for Directory lookups only. Not sure on SSO, sorry about that.