N9 and V10.2011.34-1_PR_001

And having problems with MfE: Works pretty ok with wifi but no connection when using cellular data: "cant connect to server" And sync fails without any reason. After this this it gets stuck and doesn't work even if I switch back to wifi.

Also having problems downloading attachments: First one works but after that it just fails.

Might be hard to speculate without knowing more about server-side setup. Gmail and Imap working great for other accounts.