Hi Michal,
I am currently working on some selenium test cases. While I working on that I observe weird behavior, probably should be a bug. After changing your password there is no any confirmation message. This may be an usability issue. Again you click on the change password link there is only Go and Cancel buttons in the opened dialog box. Reason may due to re-factoring is going on. I am having a difficulty to access elements in the dialog box. I tried both is and xpath. May be those are dynamically created ones. Any method to access those?