The message of Skype always appears on bottom. It looks strange.
I have checked and the Skype application works normally. There are no weird errors of strange messages as you said. It's possible that your Skype might be corrupted. I recommend its full uninstall and then perform a reinstall operation using the download from the official website.
Download page: http://www.skype.com/en/download-skype/skype-for-computer/