Thanks for the report ashkir!
The repair_settings is a known problem, it should be fixed in a development version we are testing, if you want to try a beta (can't call it anything else) version feel free to ask.
For the audio captcha most likely you are using IE9, and this is another known problem: the part of SMF that tries to define the browser you are using is older than IE9 and it doesn't recognise it. If you use any other browser or the compatibility mode it will work properly.
