Hey,
I am currently running 1.9.1-beta and a problem I've been encountering is that when I attempt to set the last name of a user the name goes to all caps when I tab out of the field or if I simple enter it in and hit Save to save the changes it saves it as all caps.
Maybe this is just something in my browser but the Last name field is the only one this happens in. It's no big deal just something I noticed.
http://forums.b2evolution.net/viewtopic.php?t=9690
probly the same for 1.9.*