== OWA username and mailboxname is not the same ==
I had some problems connecting to my company email account (the serever running on MS Exchange with OWA enabled). The problem seems to be that in the setup we have the username and mailboxname are not the same and since Evolution 2.x the setup don't let you specify these setting seperatly (in 1.4 you had a textbox for each did).
I solved it by fetching the gconf.xml file from a machine I knew I had a working setup.
So here is a quick tutorial if you have the same problem.
* Shutdown Evolution and all it's processes.