Different cursor in Skype

Solution 1:

Strange, but on my system (13.04) the issue has been healed just through installation of libxcursor1:i386.

Solution 2:

This is common problem with Skype, I've had it too. To fix it, you need to install kde's system-settings (sadly, no option for the cursor in qt-config, and it's probably not so trivial, or wise to edit the qt-config by hand). In KDE's system settings, choose the mouse option to change your Qt cursor theme.

Another possible fix is to change the default theme for your entire system. Run galternatives and change the x-cursor theme to the one you currently use.